Novel glp-1 receptor modulators

ABSTRACT

Compounds are provided that modulate the glucagon-like peptide 1 (GLP-1) receptor, as well as methods of their synthesis, and methods of their therapeutic and/or prophylactic use. Such compounds can act as modulators or potentiators of GLP-1 receptor on their own, or with incretin peptides such as GLP-1(7-36) and GLP-1(9-36), or with peptide-based therapies, such as exenatide and liraglutide, and have the following general structure (where “ ” represents either or both the R and S form of the compound): 
     
       
         
         
             
             
         
       
     
     where A, B, C, Y 1 , Y 2 , Z, R 1 , R 2 , R 3 , R 4 , R 5 , W 1 , n, p and q are as defined herein.

STATEMENT REGARDING SEQUENCE LISTING

The Sequence Listing associated with this application is provided in text format in lieu of a paper copy, and is hereby incorporated by reference into the specification. The name of the text file containing the Sequence Listing is 800059_412SEQUENCE_LISTING.txt. The text file is 1.7 KB, was created on Dec. 10, 2015, and is being submitted electronically via EFS-Web.

FIELD OF THE INVENTION

The invention relates to compounds that bind the glucagon-like peptide 1 (GLP-1) receptor, methods of their synthesis, and methods of their therapeutic and/or prophylactic use. The present invention is directed to compounds adapted to act as modulators of the GLP-1 receptor, and potentiators of incretin peptides, such as GLP-1(7-36) and GLP-1(9-36), and oxyntomodulin, as well as peptide-based therapies such as exenatide and liraglutide.

BACKGROUND

Glucagon-like peptide 1 receptor (GLP-1R) belongs to Family B1 of the seven-transmembrane G protein-coupled receptors, and its natural agonist ligand is the peptide hormone glucagon-like peptide-1 (GLP-1). GLP-1 is a peptide hormone arising by its alternative enzymatic cleavage from proglucagon, the prohormone precursor for GLP-1, which is highly expressed in enteroendocrine cells of the intestine, the alpha cells of the endocrine pancreas (islets of Langerhans), and the brain (Kieffer T. J. and Habener, J. F. Endocrin. Rev. 20:876-913 (1999); Drucker, D. J., Endocrinology 142:521-7 (2001); Hoist, J. J., Diabetes Metab. Res. Rev. 18:430-41 (2002)). The initial actions of GLP-1 observed were on the insulin-producing cells of the islets, where it stimulates glucose-dependent insulin secretion. Subsequently, multiple additional antidiabetogenic actions of GLP-1 were discovered including the stimulation of the growth and inhibition of the apoptosis of pancreatic beta cells (Drucker, D. J., Endocrinology 144:5145-8 (2003); Holz, G. G. and Chepurny O. G., Curr. Med. Chem. 10:2471-83 (2003); List, J. F. and Habener, J. F., Am. J. Physiol. Endocrinol. Metab. 286:E875-81 (2004)).

Like GLP-1 Oxyntomodulin is also generated from L-cell derived proglucagon by alternative proteolysis. Oxyntomodulin is identical to glucagon plus an additional 8 amino acid carboxyterminal extension (Bataille D., et al, Peptides 2 Suppl s:41-4 (1981)). Oxyntomodulin is a dual agonist of both GLP-1 receptor and glucagon receptor. Oxyntomodulin induces glucose dependent insulin secretion from pancreatic 13 cells (Maida, A., et al, Endocrinology 149:5670-8 (2008), and in vivo, oxyntomodulin modulates food intake (Dakin, C. L. et al, Endocrinology 142:4244-50 (2001)) and is significantly anorectic (Baggio, L. L. et al, Gastroenterology 127:46-58 (2004)).

On activation, GLP-1 receptors couple to the α-subunit of G protein, with subsequent activation of adenylate cyclase and increase of cAMP levels, thereby potentiating glucose-stimulated insulin secretion. Therefore, GLP-1 is an attractive therapeutic target to lower blood glucose and preserve the β-cells of the pancreas of diabetic patients. Glucagon has been used for decades in medical practice within diabetes and several glucagon-like peptides are being developed for various therapeutic indications. GLP-1 analogs and derivatives are being developed for the treatment for patients suffering from diabetes.

SUMMARY OF THE INVENTION

The present invention is directed to compounds adapted to act as potentiators or modulators of GLP-1 receptor; methods of their preparation and methods of their use, such as in treatment of a malcondition mediated by GLP-1 receptor activation, or when modulation or potentiation of GLP-1 receptor is medically indicated.

Certain embodiments of the present invention comprise a compound having the structure of Formula or I-S or a pharmaceutically acceptable isomer, enantiomer, racemate, salt, isotope, prodrug, hydrate or solvate thereof:

wherein

-   -   A is a 5-, 6- or 7-membered heterocyclyl having one, two or         three heteroatoms where each such heteroatom is independently         selected from O, N, and S, and where any ring atom of such         heterocyclyl may be optionally substituted with one or more of         R₄;     -   B is aryl, aralkyl, heterocyclyl, or heterocyclylalkyl;     -   C is aryl, aralkyl, heterocyclyl or heterocyclylalkyl, and when         C is aryl A and C may be taken together to form a fused bicyclic         ring system between the 5-, 6- or 7-membered heterocyclyl of A         and the aryl of C;

Y₁ and Y₂ are both null, or one of Y₁ or Y₂ is —NH— or —O— and the other Y₁ or Y₂ is null;

-   -   Z is —C(O)— or —S(O)₂—;     -   each R₁ is independently H or C₁₋₄ alkyl;     -   R₂ is —OH, —O—R₈, —N(R₁)—SO₂—R₇, —NR₄₁R₄₂,         —N(R₁)—(CR_(a)R_(b))_(m)—COOR₈,         —N(R₁)—(CR_(a)R_(b))_(m)—CO—N(R₁)(R₄₀),         —N(R₁)—(CR_(a)R_(b))_(m)—N(R₁)C(O)O(R₈),         —N(R₁)—(CR_(a)R_(b))_(m)—N(R₁)(R₄₀),         —N(R₁)—(CR_(a)R_(b))_(m)—CO—N(R₁)-heterocyclyl, or         —N(R₁)—(CR_(a)R_(b))_(m)-heterocyclyl, which heterocyclyl may be         optionally (singly or multiply) substituted with R₇;     -   each R₃ and R₄ is independently H, halo, alkyl, alkyl         substituted (singly or multiply) with R₃₁, alkoxy, haloalkyl,         perhaloalkyl, haloalkoxy, perhaloalkoxy, aryl, heterocyclyl,         —OH, —OR₇, —CN, —NO₂, —NR₁R₇, —C(O)R₇, —C(O)NR₁R₇, —NR₁C(O)R₇,         —SR₇, —S(O)R₇, —S(O)₂R₇, —OS(O)₂R₇, —S(O)₂NR₁R₇, —NR₁S(O)₂R₇,         —(CR_(a)R_(b))_(m)NR₁R₇, —(CR_(a)R_(b))_(m)O(CR_(a)R_(b))_(m)R₇,         —(CR_(a)R_(b))_(m)NR₁(CR_(a)R_(b))_(m)R₇ or         —(CR_(a)R_(b))_(m)NR₁(CR_(a)R_(b))_(m)COOR₈; or any two R₃ or R₄         groups on the same carbon atom taken together form oxo;     -   each R₃₁ is independently H, halo, hydroxyl, —NR₄₁R₄₂, or         alkoxy;     -   each R₄₀ is independently H, R₇, alkyl which may be optionally         (singly or multiply) substituted with R₇, or R₄₀ and R₁ taken         together with the N atom to which they are attached form a 3- to         7-membered heterocyclyl which may be optionally (singly or         multiply) substituted with R₇;     -   each R₄₁ and R₄₂ is independently R₄₀, —(CHR₄₀)_(n)—C(O)O—R₄₀,         —(CHR₄₀)_(n)—C(O)—R₄₀, —(CH₂)_(n)—N(R₁)(R₇), aryl or heteroaryl         any of which aryl or heteroaryl may be optionally (singly or         multiply) substituted with R₇; or any two R₄₁ and R₄₂ taken         together with the N atom to which they are attached form a 3- to         7-membered heterocyclyl which may be optionally (singly or         multiply) substituted with R₇;     -   W₁ is null or -L₁-(CR_(a)R_(b))_(m)-L₁-R₆;     -   each L₁ is independently, from the proximal to distal end of the         structure of Formula I-R or I-S, null, —C(O)O—, —S(O₂)—, —S(O)—,         —S—, —N(R₁)—C(O)—N(R₁)—, —N(R₁)—C(O)—O—, —C(O)— or —S(O₂)—NR₁—;     -   each R_(a) and R_(b) is independently H, halo, alkyl, alkoxy,         aryl, aralkyl, heterocyclyl, heterocyclylalkyl (any of which         alkyl, alkoxy, aryl, aralkyl, heterocyclyl or heterocyclylalkyl         may be optionally (singly or multiply) substituted with R₇,         —(CHR₄₀)_(m)C(O)OR₄₀, —(CHR₄₀)_(m)OR₄₀, —(CHR₄₀)_(m)SR₄₀,         —(CHR₄₀)_(m)NR₄₁R₄₂, —(CHR₄₀)_(m)C(O)N R₄₁R₄₂,         —(CHR₄₀)_(m)C(O)N(R₁)(CHR₄₀)_(m)NR₄₁R₄₂,         —(CHR₄₀)_(m)C(O)N(R₁)(CHR₄₀)_(m)C(O)NR₄₁R₄₂,         —(CHR₄₀)_(m)C(O)N(R₁)—(CHR₄₀)_(m)C(O)OR₄₀, or         —(CHR₄₀)_(m)—S—S—R₄₀; or any two R_(a) and R_(b) taken together         with the carbon atom(s) to which they are attached form a         cycloalkyl or heterocyclyl optionally substituted (singly or         multiply) with R₇; or R₁ and any one of R_(a) or R_(b) taken         together with the atoms to which they are attached form         heterocyclyl optionally substituted (singly or multiply) with         R₇;     -   R₅ is R₇, —(CR_(a)R_(b))_(m)—(CR_(a)R_(b))_(m)—R₇, or         -(-L₃-(CR_(a)R_(b))_(r)-L₃-R₇; wherein the carbon atoms of any         two adjacent —(CR_(a)R_(b))_(m) or (CR_(a)R_(b))_(r) groups may         be taken together to form a double bond (—(C(R_(a))═(C(R_(a))—)         or triple bond (—C≡C—);     -   R₆ is H, alkyl, aryl, heteroaryl, heterocyclyl,         heterocycloalkyl, any of which may be optionally substituted         (singly or multiply) with R₇ or         —(CR_(a)R_(b))_(m)-L₂-(CR_(a)R_(b))_(m)—R₇;     -   each R₇ is independently R₁₀; a ring moiety selected from         cycloalkyl, aryl, aralkyl, heterocyclyl or heterocyclylalkyl,         where such ring moiety is optionally (singly or multiply)         substituted with R₁₀; or when a carbon atom bears two R₇ groups         such two R₇ groups are taken together to form oxo or thioxo, or         are taken together to form a ring moiety selected from         cycloalkyl, aryl, heterocyclyl or heterocyclyl, wherein such         ring moiety is optionally singly or multiply substituted with         R₁₀;     -   each R₁₀ is independently H, halo, alkyl, haloalkyl, haloalkoxy,         perhaloalkyl, perhaloalkoxy, —(CR_(a)R_(b))_(m)OH,         —(CR_(a)R_(b))_(m)OR₈, —(CR_(a)R_(b))_(m)CN,         —(CR_(a)R_(b))_(m)NH(C═NH)NH₂, —(CR_(a)R_(b))_(m)NR₁R₈,         —(CR_(a)R_(b))_(m)O(CR_(a)R_(b))_(m)R₈,         —(CR_(a)R_(b))_(m)NR₁(CR_(a)R_(b))_(m)R₈,         —(CR_(a)R_(b))_(m)C(O)R₈, —(CR_(a)R_(b))_(m)C(O)OR₈,         —(CR_(a)R_(b))_(m)C(O)NR₁R₈,         —(CR_(a)R_(b))_(m)NR₁(CR_(a)R_(b))_(m)C(O)OR₈,         —(CR_(a)R_(b))_(m)NR₁C(O)R₈, —(CR_(a)R_(b))_(m)C(O)NR₁S(O)₂R₈,         —(CR_(a)R_(b))_(m)SR₈, —(CR_(a)R_(b))_(m)S(O)R₈,         —(CR_(a)R_(b))_(m)S(O)₂R₈, —(CR_(a)R_(b))_(m)S(O)₂NR₁R₈ or         —(CR_(a)R_(b))_(m)NR₁S(O)₂R₈;     -   each R₈ is independently H, alkyl, haloalkyl, aryl,         —(CR_(a)R_(b))_(m)-L₂-(CR_(a)R_(b))_(m)—R₁ or         -(-L₃-(CR_(a)R_(b))_(r)—)_(s)-L₃-R₁;     -   L₂ is independently, from the proximal to distal end of the         structure of Formula I-R or I-S, null, —O—, —OC(O)—, —NR₁—,         —C(O)NR₁—, —N(R₁)—C(O)—, —S(O₂)—, —S(O)—, —S—, —C(O)— or         —S(O₂)—N(R₁)—;     -   each L₃ is independently null, —O—, or —N(R₁)—     -   each m is independently 0, 1, 2, 3, 4, 5 or 6;     -   each n is independently 0 or 1 or 2;     -   p is 0, 1, 2 or 3;     -   q is 0, 1, 2 or 3;     -   each r is independently 2, 3, or 4; and     -   each s is independently 1, 2, 3, or 4.

In certain embodiments, a pharmaceutical composition comprising a compound of the invention together with at least one pharmaceutically acceptable carrier, diluent or excipient is provided.

In certain embodiments, a method of use of a compound of the invention comprising preparation of a medicament is provided.

In certain embodiments, the invention provides a pharmaceutical combination comprising a compound of the invention and a second medicament. In various such embodiments, the second medicament is an agonist, antagonist, or modulator for glucagon receptor, GIP receptor, GLP-2 receptor, or PTH receptor, or glucagon-like peptide 1 (GLP-1) receptor. In various such embodiments, the second medicament is exenatide, liraglutide, taspoglutide, albiglutide, or lixisenatide or other insulin regulating peptide. In various embodiments, the second medicament is medically indicated for the treatment of type II diabetes. In various embodiments, the second medicament is a biguanide, a sulfonylurea, a meglitinide, a thiazolidinedione, an α-glucosidase inhibitor, a bile acid sequestrant, an SGLT1/2 inhibitor, and/or a dopamine-2 auonist, and in more specific embodiments is metformin (a biguanide) or sitagliptin (a DPPIV inhibitor).

In certain embodiments, a method of activation, potentiation or agonism of a GLP-1 receptor is provided comprising contacting the receptor with a compound, pharmaceutical composition or pharmaceutical combination of the invention.

In certain embodiments, a method of potentiating a GLP-1 receptor is provided comprising contacting the receptor with a compound in the presense of GLP-1(7-36), GLP-1(9-36) and/or oxyntomodulin.

In certain embodiments, a method is provided for treatment of a malcondition in a subject for which activation, potentiation or agonism of a GLP-1 receptor is medically indicated where such method comprises administering to such subject a compound, pharmaceutical composition or pharmaceutical combination of the invention. In various such embodiments, selective activation, potentiation or agonism of a GLP-1 receptor, is medically indicated. In various such embodiments, the malcondition comprises type I diabetes, type II diabetes, gestational diabetes, obesity, excessive appetite, insufficient satiety, metabolic disorder, non-alcoholic fatty liver disease and/or non-alcoholic steatohepatitis.

In certain embodiments, the invention provides methods for synthesis of certain compounds including compounds of the invention. In certain other embodiments, the invention provides certain intermediate compounds associated with such methods of synthesis.

DETAILED DESCRIPTION OF THE INVENTION

Certain embodiments comprise a compound having the chiral structure of Formula I-R or I-S (with the chirality as indicated) or a pharmaceutically acceptable isomer, enantiomer, racemate, salt, isotope, prodrug, hydrate or solvate thereof:

Certain embodiments of the present invention comprise a compound having the structure of Formula I-R or I-S or a pharmaceutically acceptable isomer, enantiomer, racemate, salt, isotope, prodrug, hydrate or solvate thereof:

-   -   where A, B, C, Y₁, Y₂, Z, R₁, R₂, R₃, R₄, R₅, W₁, n, p and q are         as defined above.

In certain embodiments, the compounds have the structure of Formula I-R or a pharmaceutically acceptable isomer, enantiomer, salt, isotope, prodrug, hydrate or solvate thereof. In other embodiments, the compounds have the structure of Formula I-S or a pharmaceutically acceptable isomer, enantiomer, salt, isotope, prodrug, hydrate or solvate thereof.

In certain embodiments, the compounds can be substantially enantiomerically pure.

In certain embodiments, the invention provides a compound of Formula I-R and/or Formula I-S where Y₁ and Y₂ are null, Z is —C(O)— and A is a 5- or 6-membered heteroaryl group. Representative compounds of this embodiment include compounds of the following structures (wherein “

” represents either or both the R and S form of the compound):

In certain embodiments, the invention provides a compound where Y₁ and Y₂ are null Z is —C(O)— and A is a 5-, 6- or 7-membered non-aromatic heterocyclyl group. Representative compounds of this embodiment include compounds of the following structures (wherein “

” represents either or both the R and S form of the compound):

In certain embodiments, the invention provides compounds of each of structures I-R/S (1)-(29) where R₄ of the phenyl group is H.

In certain embodiments, the inventions provides compounds of each of structures I-R/S (1)-(29) where the A group (i.e., the 5-, 6- or 7-membered heterocyclyl) is not substituted by R₄, or substituted by R₄ where R₄ is alkyl, haloalkyl, alkoxy, —NR₁R₇ where R₁ and R₇ are independently hydrogen or alkyl, or substituted by two R₄ groups which taken together form oxo.

In certain embodiments, the invention provides a compound of Formula I-R and/or Formula I-S where Y₁ and Y₂ are null, Z is —C(O)— and C is aryl. Representative compounds of this embodiment include compounds of the following structures (wherein “

” represents either or both the R and S form of the compound):

In certain embodiments, the invention provides compounds of each of structures I-R/S (30)-(32) where q is zero.

In certain embodiments, the invention provides compounds of each of structures I-R/S (30)-(32) where q is one, two or three.

In certain embodiments, the invention provides compounds of structure I-R/S(30) where q is one and R₅ is —(CR_(a)R_(b))_(m)-L₂-(CR_(a)R_(b))_(m)—R₇ or -(-L₃-(CR_(a)R_(b))_(r)—)_(s)-L₃-R₇. Representative compounds of this embodiment include compounds of the following structure (wherein “

” represents either or both the R and S form of the compound):

In certain embodiments, the invention provides compounds of structure I-R/S(33) where R₇ is H or alkyl and L₂ is O. Representative compounds of this embodiment include compounds of the following structure (wherein “

” represents either or both the R and S form of the compound):

In certain embodiments, the invention provides compounds of structure I-R/S(30) where R₅ is R₇. Representative compounds of this embodiment include compounds of the following structure (wherein “

” represents either or both the R and S form of the compound):

In certain embodiments, the invention provides compounds of structure I-R/S(35) where R7 is halo, alkyl, haloalkyl, perhaloalkyl, alkoxy, —(CR_(a)R_(b))_(m)OH, —(CR_(a)R_(b))_(m)OR₈, —(CR_(a)R_(b))_(m)CN, —(CR_(a)R_(b))_(m)NH(C═NH)NH₂, —(CR_(a)R_(b))_(m)NR₁R₈, —(CR_(a)R_(b))_(m)O(CR_(a)R_(b))_(m)R₈, —(CR_(a)R_(b))_(m)NR₁(CR_(a)R_(b))_(m)R₈, —(CR_(a)R_(b))_(m)C(O)R₈, —(CR_(a)R_(b))_(m)C(O)OR₈, —(CR_(a)R_(b))_(m)C(O)NR₁R₈, —(CR_(a)R_(b))_(m)NR₁(CR_(a)R_(b))_(m)C(O)OR₈, —(CR_(a)R_(b))_(m)NR₁C(O)R₈, —(CR_(a)R_(b))_(m)C(O)NR₁R₈, —(CR_(a)R_(b))_(m)SR₈, —(CR_(a)R_(b))_(m)S(O)R₈, —(CR_(a)R_(b))_(m)S(O)₂R₈, —(CR_(a)R_(b))_(m)S(O)₂NR₁R₈, —(CR_(a)R_(b))_(m)NR₁S(O)₂R₈.

In certain embodiments, the invention provides compounds of structure I-R/S(35) where R₇ is a ring moiety selected from cycloalkyl, aryl, aralkyl, heterocyclyl or heterocyclylalkyl, where such ring moiety is optionally (singly or multiply) substituted with halo, —OH, —CN, alkyl, alkoxy, haloalkyl or perhaloalkyl.

In certain embodiments, the invention provides a compound of Formula I-R and/or Formula I-S where Y₁ and Y₂ are null, Z is —C(O)— and C is heterocyclyl. Representative compounds of this embodiment include compounds of the following structures (wherein “

” represents either or both the R and S form of the compound):

In certain embodiments, the invention provides compounds of each of structures I-R/S(36)-(48) where R₇ is halo, alkyl, haloalkyl, perhaloalkyl, alkoxy, —(CR_(a)R_(b))_(m)OH, —(CR_(a)R_(b))_(m)OR₈, —(CR_(a)R_(b))_(m)CN, —(CR_(a)R_(b))_(m)NH(C═NH)NH₂, —(CR_(a)R_(b))_(m)NR₁R₈, —(CR_(a)R_(b))_(m)O(CR_(a)R_(b))_(m)R₈, —(CR_(a)R_(b))_(m)NR₁(CR_(a)R_(b))_(m)R₈, —(CR_(a)R_(b))_(m)C(O)R₈, —(CR_(a)R_(b))_(m)C(O)OR₈, —(CR_(a)R_(b))_(m)C(O)NR₁R₈, —(CR_(a)R_(b))_(m)NR₁(CR_(a)R_(b))_(m)C(O)OR₈, —(CR_(a)R_(b))_(m)NR₁C(O)R₈, —(CR_(a)R_(b))_(m)C(O)NR₁R₈, —(CR_(a)R_(b))_(m)SR₈, —(CR_(a)R_(b))_(m)S(O)R₈, —(CR_(a)R_(b))_(m)S(O)₂R₈, —(CR_(a)R_(b))_(m)S(O)₂NR₁R₈, —(CR_(a)R_(b))_(m)NR₁S(O)₂R₈.

In certain embodiments, the invention provides compounds of each of structures I-R/S(36)-(48) where R₇ is a ring moiety selected from cycloalkyl, aryl, aralkyl, heterocyclyl or heterocyclylalkyl, where such ring moiety is optionally (singly or multiply) substituted with halo, —OH, —CN, alkyl, alkoxy, haloalkyl or perhaloalkyl.

In certain embodiments, the invention provides a compound of Formula I-R and/or Formula I-S where Y₁ and Y₂ are null, Z is —C(O)— and B is aryl or aralkyl. Representative compounds of this embodiment include compounds of the following structures (wherein “

” represents either or both the R and S form of the compound):

In certain embodiments, the invention provides compounds of each of structures I-R/S (49)-(52) where W₁ is null.

Representative compounds of this embodiment include compounds of the following structure (wherein “

” represents either or both the R and S form of the compound):

In certain embodiments, the invention provides compounds of structure I-R/S(53) where R₃ is halo, alkyl, alkyl substituted with R₃₁, alkoxy, haloalkyl, perhaloalkyl, haloalkoxy, perhaloalkoxy, aryl, heterocyclyl, —OH, —OR₇, —CN, —NO₂, —NR₁R₇, —C(O)R₇, —C(O)NR₁R₇, —NR₁C(O)R₇, —SR₇, —S(O)R₇, —S(O)₂R₇, —OS(O)₂R₇, —S(O)₂NR₁R₇, —NR₁S(O)₂R₇, —(CR_(a)R_(b))_(m)NR₁R₇, —(CR_(a)R_(b))_(m)O(CR_(a)R_(b))_(m)R₇, —(CR_(a)R_(b))_(m)NR₁(CR_(a)R_(b))_(m)R₇ or —(CR_(a)R_(b))_(m)NR₁(CR_(a)R_(b))_(m)COOR₈.

In certain embodiments, the invention provides compounds of each of structures I-R/S (49)-(53) where R₃ is alkyl.

In certain embodiments, the invention provides a compound of Formula I-R and/or Formula I-S where Y₁ and Y₂ are null, Z is —C(O)— and B is heterocyclyl or heterocyclylalkyl. Representative compounds of this embodiment include compounds of the following structures (wherein “

” represents either or both the R and S form of the compound):

In certain embodiments, the invention provides compounds of each of structures I-R/S(54)-(66) where W₁ is null.

In certain embodiments, the invention provides compounds of each of structures I-R/S(54)-(66) where W₁ is null and R₃ is halo, alkyl, alkyl substituted with R₃₁ alkoxy, haloalkyl, perhaloalkyl, haloalkoxy, perhaloalkoxy, aryl, heterocyclyl, —OH, —OR₇, —CN, —NO₂, —NR₁R₇, —C(O)R₇, —C(O)NR₁R₇, —NR₁C(O)R₇, —SR₇, —S(O)R₇, —S(O)₂R₇, —OS(O)₂R₇, —S(O)₂NR₁R₇, —NR₁S(O)₂R₇, —(CR_(a)R_(b))_(m)NR₁R₇, —(CR_(a)R_(b))_(m)O(CR_(a)R_(b))_(m)R₇, —(CR_(a)R_(b))_(m)NR₁(CR_(a)R_(b))_(m)R₇ or —(CR_(a)R_(b))_(m)NR₁(CR_(a)R_(b)).

In certain embodiments, the invention provides compounds of each of structures I-R/S(54)-(66) where W₁ is null, p is 1 and R₃ is alkyl.

In certain embodiments, the invention provides compounds of each of structures I-R/S(1)-(66) where R₂ is —OH, —N(R₁)—(CR_(a)R_(b))_(m)—COOH or —N(R₁)—SO₂—R₇; where R₁ is H; where R_(a) and R_(b) are independently H, alkyl, alkoxy, —(CHR₄₀)_(m)C(O)NR₄₁R₄₂, —(CHR₄₀)_(m)C(O)OR₄₀, —(CHR₄₀)_(m)NR₄₁R₄₂, —(CHR₄₀)_(m)SR₄₀, aryl optionally substituted with R₇, or wherein R₁ and any one of R_(a) or R_(b) taken together with the carbon(s) to which they are attached form heterocyclyl; R₈ is alkyl; and m is 1 or 2.

In certain embodiments, the invention provides compounds of the following structures (wherein “

” represents either or both the R and S form of the compound):

In certain embodiments, the invention provides compounds of structure I-R/S(67)-(82) where A is a 5-membered heteroaryl.

In certain embodiments, the invention provides compounds of structure I-R/S(57)-(82) where A is a 6-membered heteroaryl.

In certain embodiments, the invention provides compounds of structure I-R/S(67)-(82)) where A is a 6-membered heteroaryl having one or two nitrogen atoms.

In certain embodiments, the invention provides compounds of structure I-R/S(67)-(82) where A is pyrimindinyl.

In certain embodiments, the invention provides compounds of structure I-R/S(67)-(82) where A is pyridinyl.

In certain embodiments, the invention provides compounds of structure I-R/S(67)-(82) where B is aryl.

In certain embodiments, the invention provides compounds of structure I-R/S(67)-(82) where B is phenyl.

In certain embodiments, the invention provides compounds of structure I-R/S(67)-(82) where B is heteroaryl.

In certain embodiments, the invention provides compounds of structure I-R/S(67)-(82) where B is thiophenyl.

In certain embodiments, the invention provides compounds of structure I-R/S(67)-(82) where R₂ is —OH.

In certain embodiments, the invention provides compounds of structure I-R/S(67)-(82) where R₂ is —N(R₁)(CR_(a)R_(b))_(m)COOR₈.

In certain embodiments, the invention provides compounds of structure I-R/S(67)-(82) where R₂ is —N(R₁)SO₂R₇.

In certain embodiments, the invention provides compounds of structure I-R/S(67)-(82) where R₂ is —NHCH₂COOH.

In certain embodiments, the invention provides compounds of structure I-R/S(67)-(82) where R₂ is —NH(CHR_(b))COOH where R_(b) is alkyl optionally substituted with R₇, —(CHR₄₀)_(m)OR₄₀, —(CHR₄₀)_(m)SR₄₀, —(CHR₄₀)_(m)NR₄₁R₄₂, —(CHR₄₀)_(m)C(O)NR₄₁R₄₂, —(CHR₄₀)_(m)C(O)N(R₁)(CHR₄₀)_(m)NR₄₁R₄₂, —(CHR₄₀)_(m)C(O)N(R₁)(CHR₄₀)_(m)C(O)NR₄₁R₄₂, —(CHR₄₀)_(m)C(O) N(R₁)(CHR₄₀)_(m)C(O)OR₄₀ or —(CHR₄₀)m-S—S—R₄₀

In certain embodiments, the invention provides compounds of structure I-R/S(67)-(82) where R₂ is —NH(CR_(a)R_(b))_(m)COOH where R_(a) and R_(b) are independently H, alkyl optionally substituted with R₇, —(CHR₄₀)_(m)OR₄₀, —(CHR₄₀)_(m)SR₄₀, —(CHR₄₀)_(m)NR₄₁R₄₂, —(CHR₄₀)_(m)C(O)NR₄₁R₄₂, —(CHR₄₀)_(m)C(O)N(R₁)(CHR₄₀)_(m)NR₄₁R₄₂, —(CHR₄₀)_(m)C(O)N(R₁)—(CHR₄₀)_(m)C(O)NR₄₁R₄₂, —(CHR₄₀)_(m)C(O)N(R₁)(CHR₄₀)_(m)C(O) OR₄₀ or —(CHR₄₀)m-S—S—R₄₀.

In certain embodiments, the invention provides compounds of structure I-R/S(67)-(82) where R₂ is —NR₁(CHR_(b))_(m)COOH where R₁ and R_(b) taken together form heterocyclyl.

In certain embodiments, the invention provides compounds of structure I-R/S(67)-(82) where R₂ is —NR₁(CR_(a)R_(b))_(m)COOH where R₁ and one of R_(b) taken together form heterocyclyl.

In certain embodiments, the invention provides compounds of structure I-R/S(67)-(82) where any two R_(a) and R_(b) taken together with the carbon to which they are attached form a cycloalkyl.

In certain embodiments, the invention provides compounds of structure I-R/S(67)-(82) where R₂ is —NH(CR_(a)R_(b))_(m)COOH where one of R_(a) and R_(b) is H and the other R_(a) and R_(b) is aryl substituted with R₇.

In certain embodiments, the invention provides compounds of structure I-R/S(67)-(82) where p is 1 or 2 and each R₃ is independently alkyl, alkoxy, —OH, perhaloalkyl or —C(O)R₈.

In certain embodiments, the invention provides compounds of structure I-R/S(67)-(82) where p is 1 and each R₃ is alkyl.

In certain embodiments, the invention provides compounds of structure I-R/S(67)-(82) where q is 1 and R₅ is —(CR_(a)R_(b))_(m)-L₂-(CR_(a)R_(b))_(m)—R₇, and in more specific embodiments where q is 1 and R₅ is —(CH₂)_(m)L₂-(CH₂)_(m)—R₇.

In certain embodiments, the invention provides compounds of structure I-R/S(67)-(82) where q is 1 and R₅ is alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(67)-(82) where q is 1 and R₅ is R₇.

In certain embodiments, the invention provides compounds of each of structures I-R/S(67)-(82) where q is 1, R₅ is R₇, and R₇ is halo, alkyl, haloalkyl, perhaloalkyl, alkoxy, —(CR_(a)R_(b))_(m)OH, —(CR_(a)R_(b))_(m)OR₈, —(CR_(a)R_(b))_(m)CN, —(CR_(a)R_(b))_(m)NH(C═NH)NH₂, —(CR_(a)R_(b))_(m)NR₁R₈, —(CR_(a)R_(b))_(m)O(CR_(a)R_(b))_(m)R₈, —(CR_(a)R_(b))_(m)NR₁(CR_(a)R_(b))_(m)R₈, —(CR_(a)R_(b))_(m)C(O)R₈, —(CR_(a)R_(b))_(m)C(O)OR₈, —(CR_(a)R_(b))_(m)C(O)NR₁R₈, —(CR_(a)R_(b))_(m)NR₁(CR_(a)R_(b))_(m)C(O)OR₈, —(CR_(a)R_(b))_(m)NR₁C(O)R₈, —(CR_(a)R_(b))_(m)C(O)NR₁R₈, —(CR_(a)R_(b))_(m)SR₈, —(CR_(a)R_(b))_(m)S(O)R₈, —(CR_(a)R_(b))_(m)S(O)₂R₈, —(CR_(a)R_(b))_(m)S(O)₂NR₁R₈, —(CR_(a)R_(b))_(m)NR₁S(O)₂R₈.

In certain embodiments, the invention provides compounds of each of structures I-R/S(67)-(82) where q is 1, R₅ is R₇, and R₇ is a ring moiety selected from cycloalkyl, aryl, aralkyl, heterocyclyl or heterocyclylalkyl, where such ring moiety is optionally (singly or multiply) substituted with halo, —OH, —CN, alkyl, alkoxy, haloalkyl or perhaloalkyl.

In certain embodiments, the invention provides compounds of the following structures (wherein “

” represents either or both the R and S form of the compound):

wherein C(R₅)_(q) is selected from one of the following:

In certain embodiments, the invention provides compounds of structure I-R/S(83) where B is phenyl or thiophenyl. Representative compounds of this embodiment include compounds of the following structure (wherein “

” represents either or both the R and S form of the compound):

In certain embodiments, the invention provides compounds of structure I-R/S(84)-(85) where p is 1 and R₃ is alkyl.

In certain embodiments, the invention provides compounds of structure I-R/S(84)-(85) where p is 1 and R₃ is tert-butyl.

In certain embodiments, the invention provides compounds of structure I-R/S(84)-(85) where q is 1 and R₅ is alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(84)-(85) where q is 1 and R₅ is C₄₋₈ alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(84)-(85) where q is 1 and R₅ is C₆₋₈ alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(84)-(85) where p is 1, R₃ is tert-butyl, q is 1 and R₅ is C₆₋₈ alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(84)-(85) where p is 1, R₃ is tert-butyl, q is 1 and R₅ is C₆ alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(84)-(85) where p is 1, R₃ is tert-butyl, q is 1 and R₅ is C₇ alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(84)-(85) where q is 1 and R₅ is C₆ alkoxy

In certain embodiments, the invention provides compounds of structure I-R/S(84)-(85) where q is 1 and R₅ is C₇ alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(84)-(85) where q is 1 and R₅ is C₈ alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(84)-(85) where q is 1 and R₅ is alkyl.

In certain embodiments, the invention provides compounds of structure I-R/S(84)-(85) where q is 1 and R₅ is C₁₋₄ alkyl.

In certain embodiments, the invention provides compounds of structure I-R/S(84)-(85) where q is 1 and R₅ is cycloalkyl.

In certain embodiments, the invention provides compounds of structure I-R/S(84)-(85) where q is 1 and R₅ is cyclopropyl.

In certain embodiments, the invention provides compounds of structure I-R/S(84)-(85) where p is 1, R₃ is alkyl, q is 1 and R₅ is alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(84)-(85) where p is 1, R₃ is tert-butyl, q is 1 and R₅ is C₄₋₈ alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(84)-(85) where p is 1, R₃ is tert-butyl, q is 1 and R₅ is C₇ alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(84)-(85) where p is 1, R₃ is tert-butyl, q is 1 and R₅ is alkyl.

In certain embodiments, the invention provides compounds of structure I-R/S(84)-(85) where p is 1, R₃ is tert-butyl, q is 1 and R₅ is C₁₋₄ alkyl.

In certain embodiments, the invention provides compounds of structure I-R/S(84)-(85) where p is 1, R₃ is tert-butyl, q is 1 and R₅ is cycloalkyl.

In certain embodiments, the invention provides compounds of structure I-R/S(84)-(85) where p is 1, R₃ is tert-butyl, q is 1 and R₅ is cyclopropyl.

In certain embodiments, the invention provides compounds of the following structures (wherein “

” represents either or both the R and S form of the compound):

In certain embodiments, the invention provides compounds of structure I-R/S(86) where B is phenyl or thiophenyl. Representative compounds of this embodiment include compounds of the following structure (wherein “

” represents either or both the R and S form of the compound):

In certain embodiments, the invention provides compounds of structure I-R/S(87)-(88) where aralkyl is benzyl (—CH₂phenyl), phenylethyl (—CH₂CH₂phenyl) or phenylethylene (—CH═CHphenyl).

In certain embodiments, the invention provides compounds of structure I-R/S(87)-(88) where aralkyl is benzyl (—CH₂phenyl).

In certain embodiments, the invention provides compounds of structure I-R/S(87)-(88) where aralkyl is phenylethyl (—CH₂CH₂phenyl).

In certain embodiments, the invention provides compounds of structure I-R/S(87)-(88) where aralkyl is phenylethylene (—CH═CHphenyl).

In certain embodiments, the invention provides compounds of structure I-R/S(87)-(88) where p is 1 and R₃ is alkyl.

In certain embodiments, the invention provides compounds of structure I-R/S(87)-(88) where p is 1 and R₃ is tert-butyl.

In certain embodiments, the invention provides compounds of structure I-R/S(87)-(88) where q is 1 and R₅ is alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(87)-(88) where q is 1 and R₅ is C₄₋₈ alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(87)-(88) where q is 1 and R₅ is C₆₋₈ alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(87)-(88) where q is 1 and R₅ is C₆ alkoxy

In certain embodiments, the invention provides compounds of structure I-R/S(87)-(88) where q is 1 and R₅ is C₇ alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(87)-(88) where q is 1 and R₅ is C₈ alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(87)-(88) where q is 1 and R₅ is alkyl.

In certain embodiments, the invention provides compounds of structure I-R/S(87)-(88) where q is 1 and R₅ is C₁₋₄ alkyl.

In certain embodiments, the invention provides compounds of structure I-R/S(87)-(88) where q is 1 and R₅ is cycloalkyl.

In certain embodiments, the invention provides compounds of structure I-R/S(87)-(88) where q is 1 and R₅ is cyclopropyl.

In certain embodiments, the invention provides compounds of structure I-R/S(87)-(88) where aralkyl is benzyl, phenylethyl or phenylethylene, p is 1, R₃ is alkyl, q is 1 and R₅ is alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(87)-(88) where aralkyl is benzyl, phenylethyl or phenylethylene, p is 1, R₃ is tert-butyl, q is 1 and R₅ is C₄₋₈ alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(87)-(88) where aralkyl is benzyl, phenylethyl or phenylethylene, p is 1, R₃ is tert-butyl, q is 1 and R₅ is C₆₋₈ alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(87)-(88) where aralkyl is benzyl, phenylethyl or phenylethylene, p is 1, R₃ is tert-butyl, q is 1 and R₅ is C₆ alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(87)-(88) where aralkyl is benzyl, phenylethyl or phenylethylene, p is 1, R₃ is tert-butyl, q is 1 and R₅ is C₇ alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(87)-(88) where aralkyl is benzyl, phenylethyl or phenylethylene, p is 1, R₃ is tert-butyl, q is 1 and R₅ is C₈ alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(87)-(88) where aralkyl is benzyl, phenylethyl or phenylethylene, p is 1, R₃ is tert-butyl, q is 1 and R₅ is alkyl.

In certain embodiments, the invention provides compounds of structure I-R/S(87)-(88) where aralkyl is phenylethylene, p is 1, R₃ is tert-butyl, q is 1 and R₅ is alkyl.

In certain embodiments, the invention provides compounds of structure I-R/S(87)-(88) where aralkyl is phenylethylene, p is 1, R₃ is tert-butyl, q is 1 and R₅ is C₁₋₄ alkyl.

In certain embodiments, the invention provides compounds of structure I-R/S(87)-(88) where aralkyl is benzyl, phenylethyl or phenylethylene, p is 1, R₃ is tert-butyl, q is 1 and R₅ is cycloalkyl.

In certain embodiments, the invention provides compounds of structure I-R/S(87)-(88) where aralkyl is benzyl, phenylethyl or phenylethylene, p is 1, R₃ is tert-butyl, q is 1 and R₅ is cyclopropyl.

In certain embodiments, the invention provides compounds of the following structures (wherein “

” represents either or both the R and S form of the compound):

wherein C is selected from one of the following:

In certain embodiments, the invention provides compounds the invention provides compounds of the following structures (wherein “

” represents either or both the R and S form of the compound):

In certain embodiments, the invention provides compounds of structure I-R/S(89)-(92) where R₁ is hydrogen.

In certain embodiments, the invention provides compounds of structure I-R/S(89)-(92) where R₈ is hydrogen.

In certain embodiments, the invention provides compounds of structure I-R/S(89)-(92) where m is 2, R₁ is hydrogen, each occurrence of R_(a) and R_(b) are hydrogen, and R₈ is hydrogen.

In certain embodiments, the invention provides compounds of structure I-R/S(89)-(92) where m is 2, a single R_(a) (i.e., one of the two) is hydrogen, each occurrence of R_(b) is hydrogen, and R₈ is hydrogen.

In certain embodiments, the invention provides compounds of structure I-R/S(89)-(92) where m is 1 and R₁, R_(a), R_(b) and R₈ are hydrogen.

In certain embodiments, the invention provides compounds of structure I-R/S(89)-(92) where m is 1, R_(a) is alkyl and R₁, R_(b) and R₈ are hydrogen.

In certain embodiments, the invention provides compounds of structure I-R/S(89)-(92) where m is 1, R_(a) is methyl and R₁, R_(b) and R₈ are hydrogen.

In certain embodiments, the invention provides compounds of structure I-R/S(89)-(92) where aralkyl is benzyl (—CH₂phenyl), phenylethyl (—CH₂CH₂phenyl) or phenylethylene (—CH═CHphenyl).

In certain embodiments, the invention provides compounds of structure I-R/S(89)-(92) where aralkyl is benzyl (—CH₂phenyl).

In certain embodiments, the invention provides compounds of structure I-R/S(89)-(92) where aralkyl is phenylethyl (—CH₂CH₂phenyl).

In certain embodiments, the invention provides compounds of structure I-R/S(89)-(92) where aralkyl is phenylethylene (—CH═CHphenyl).

In certain embodiments, the invention provides compounds of structure I-R/S(89)-(92) where p is 1 and R₃ is alkyl.

In certain embodiments, the invention provides compounds of structure I-R/S(89)-(92) where p is 1 and R₃ is tert-butyl.

In certain embodiments, the invention provides compounds of structure I-R/S(89)-(92) where q is 1 and R₅ is alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(89)-(92) where q is 1 and R₅ is C₄₋₈ alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(89)-(92) where q is 1 and R₅ is C₆₋₈ alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(89)-(92) where q is 1 and R₅ is C₆ alkoxy

In certain embodiments, the invention provides compounds of structure I-R/S(89)-(92) where q is 1 and R₅ is C₇ alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(89)-(92) where q is 1 and R₅ is C₈ alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(89)-(92) where q is 1 and R₅ is alkyl.

In certain embodiments, the invention provides compounds of structure I-R/S(89)-(92) where q is 1 and R₅ is C₁₋₄ alkyl.

In certain embodiments, the invention provides compounds of structure I-R/S(89)-(92) where q is 1 and R₅ is cycloalkyl.

In certain embodiments, the invention provides compounds of structure I-R/S(89)-(92) where q is 1 and R₅ is cyclopropyl.

In certain embodiments, the invention provides compounds of structure I-R/S(91)-(92) where aralkyl is benzyl, phenylethyl or phenylethylene, p is 1, R₃ is alkyl, q is 1 and R₅ is alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(91)-(92) where aralkyl is benzyl, phenylethyl or phenylethylene, p is 1, R₃ is tert-butyl, q is 1 and R₅ is C₄₋₈ alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(91)-(92) where aralkyl is benzyl, phenylethyl or phenylethylene, p is 1, R₃ is tert-butyl, q is 1 and R₅ is C₆₋₈ alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(91)-(92) where aralkyl is benzyl, phenylethyl or phenylethylene, p is 1, R₃ is tert-butyl, q is 1 and R₅ is C₆ alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(91)-(92) where aralkyl is benzyl, phenylethyl or phenylethylene, p is 1, R₃ is tert-butyl, q is 1 and R₅ is C₇ alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(91)-(92) where aralkyl is benzyl, phenylethyl or phenylethylene, p is 1, R₃ is tert-butyl, q is 1 and R₅ is C₈ alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(91)-(92) where aralkyl is benzyl, phenylethyl or phenylethylene, p is 1, R₃ is tert-butyl, q is 1 and R₅ is alkyl.

In certain embodiments, the invention provides compounds of structure I-R/S(91)-(92) where aralkyl is phenylethylene, p is 1, R₃ is tert-butyl, q is 1 and R₅ is alkyl.

In certain embodiments, the invention provides compounds of structure I-R/S(91)-(92) where aralkyl is phenylethylene, p is 1, R₃ is tert-butyl, q is 1 and R₅ is C₁₋₄ alkyl.

In certain embodiments, the invention provides compounds of structure I-R/S(91)-(92) where aralkyl is benzyl, phenylethyl or phenylethylene, p is 1, R₃ is tert-butyl, q is 1 and R₅ is cycloalkyl.

In certain embodiments, the invention provides compounds of structure I-R/S(91)-(92) where aralkyl is benzyl, phenylethyl or phenylethylene, p is 1, R₃ is tert-butyl, q is 1 and R₅ is cyclopropyl.

In certain embodiments, the invention provides compounds of structure I-R/S(89)-(92) where m is 2, R₁ is hydrogen, each occurrence of R_(a) and R_(b) are hydrogen, and R₈ is hydrogen. Representative compounds of this embodiment include compounds of the following structure (wherein “

” represents either or both the R and S form of the compound):

In certain embodiments, the invention provides compounds of structure I-R/S(93)-(94) where p is 1 and R₃ is alkyl.

In certain embodiments, the invention provides compounds of structure I-R/S(93)-(94) where p is 1 and R₃ is tert-butyl.

In certain embodiments, the invention provides compounds of structure I-R/S(93)-(94) where q is 1 and R₅ is alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(93)-(94) where q is 1 and R₅ is C₄₋₈ alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(93)-(94) where q is 1 and R₅ is C₇ alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(93)-(94) where p is 1, R₃ is alkyl, q is 1 and R₅ is C₄₋₈ alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(89)-(90) where m is 1 and R₁, R_(b) and R₈ are hydrogen. Representative compounds of this embodiment include compounds of the following structure (wherein “

” represents either or both the R and S form of the compound):

In certain embodiments, the invention provides compounds of structure I-R/S(89)-(90) where m is 2, a single R_(a) (i.e., one of the two) is hydrogen, each occurrence of R_(b) is hydrogen, and R₈ is hydrogen. Representative compounds of this embodiment include compounds of the following structure (wherein “

” represents either or both the R and S form of the compound):

In certain embodiments, the invention provides compounds of structure I-R/S(95)-(98) where R_(a) is alkyl optionally substituted with R₇, wherein alkyl includes straight and branched alkyl groups such as methyl, ethyl, n-propyl, iso-propyl, n-butyl, iso-butyl, sec-butyl and tert-butyl, as well as cycloalkyl groups such as cyclopropyl, cyclobutyl, cyclopentyl and cyclohexyl.

In certain embodiments, the invention provides compounds of structure I-R/S(95)-(98) where R_(a) is methyl, ethyl, n-propyl, iso-propyl, n-butyl, iso-butyl, sec-butyl or tert-butyl.

In certain embodiments, the invention provides compounds of structure I-R/S(95)-(98) where R_(a) is methyl.

In certain embodiments, the invention provides compounds of structure I-R/S(95)-(98) where R_(a) is cyclopropyl, cyclobutyl, cyclopentyl or cyclohexyl.

In certain embodiments, the invention provides compounds of structure I-R/S(95)-(98) where R_(a) is heterocycle or heterocyclylalkyl, either which may be optionally substituted with R₇.

In certain embodiments, the invention provides compounds of structure I-R/S(95)-(98) where R_(a) is heterocycle, such as pyrazinyl, pyrimidinyl, pyridazinyl, thiadiazolyl, oxadiazolyl, imidazolinyl, hexahydropyrimidinyl, diazepanyl, triazinyl, imidazolyl, pyrrolidinyl, furanyl, tetrahydrofuranyl, tetrahydro-2H-pyranyl, dioxolanyl, piperidinyl, piperazinyl, morpholinyl, pyrrolyl, pyrazolyl, triazolyl, tetrazolyl, oxazolyl, isoxazolyl, thiazolyl, pyridinyl, thiophenyl, benzothiophenyl, benzofuranyl, dihydrobenzofuranyl, indolyl, dihydroindolyl, azaindolyl, indazolyl, benzimidazolyl, azabenzimidazolyl, benzoxazolyl, benzothiazolyl, benzothiadiazolyl, imidazopyridinyl, isoxazolopyridinyl, thianaphthalenyl, purinyl, xanthinyl, adeninyl, guaninyl, quinolinyl, isoquinolinyl, tetrahydroquinolinyl, quinoxalinyl, and quinazolinyl, any of which may be optionally substituted with R₇.

In certain embodiments, the invention provides compounds of structure I-R/S(95)-(98) where R_(a) is aryl or aralkyl, either of which may be optionally substituted with R₇.

In certain embodiments, the invention provides compounds of I-R/S(95)-(98) where R_(a) is aryl or aralkyl, such as phenyl or benzyl.

In certain embodiments, the invention provides compounds of structure I-R/S(95)-(98) where R_(a) is aryl or heteroaryl substituted with R₇.

In certain embodiments, the invention provides compounds of structure I-R/S(95)-(98) where R_(a) is phenyl or benzyl substituted with hydroxyl.

In certain embodiments, the invention provides compounds of structure I-R/S(95)-(98) where R_(a) is —CH(OH)C₆H₅.

In certain embodiments, the invention provides compounds of structure I-R/S(95)-(98) where R_(a) is —(CHR₄₀)_(m)C(O)OR₄₀.

In certain embodiments, the invention provides compounds of structure I-R/S(95)-(98) where R_(a) is —(CH₂)_(m)C(O)OH.

In certain embodiments, the invention provides compounds of structure I-R/S(95)-(98) where R_(a) is —(CHR₄₀)_(m)R₄₀.

In certain embodiments, the invention provides compounds of structure I-R/S(95)-(98) where R_(a) is —(CH₂)_(m)OH.

In certain embodiments, the invention provides compounds of structure I-R/S(95)-(98) where R_(a) is —CH₂OH.

In certain embodiments, the invention provides compounds of structure I-R/S(95)-(98) where R_(a) is —(CHR₄₀)_(m)SR₄₀.

In certain embodiments, the invention provides compounds of structure I-R/S(95)-(98) where R_(a) is —(CH₂)_(m)SR₄₀, where R₄₀ is H or alkyl.

In certain embodiments, the invention provides compounds of structure I-R/S(95)-(98) where R_(a) is —(CHR₄₀)_(m)NR₄₁R₄₂.

In certain embodiments, the invention provides compounds of structure I-R/S(95)-(98) where R_(a) is —(CH₂)_(m)NR₄₁R₄₂.

In certain embodiments, the invention provides compounds of structure I-R/S(95)-(98) where R_(a) is —(CHR₄₀)_(m)C(O)NR₄₁R₄₂.

In certain embodiments, the invention provides compounds of structure I-R/S(95)-(98) where R_(a) is —(CH₂)_(m)C(O)NR₄₁R₄₂.

In certain embodiments, the invention provides compounds of structure I-R/S(95)-(98) where R_(a) is —CH₂C(O)NH₂ or CH₂CH₂C(O)NH₂

In certain embodiments, the invention provides compounds of structure I-R/S(95)-(98) where R_(a) is —(CHR₄₀)_(m)C(O)N(R₁)(CHR₄₀)_(m)NR₄₁R₄₂.

In certain embodiments, the invention provides compounds of structure I-R/S(95)-(98) where R_(a) is —(CH₂)_(m)C(O)N(R₁)(CH₂)_(m)NR₄₁R₄₂.

In certain embodiments, the invention provides compounds of structure I-R/S(95)-(98) where R_(a) is —(CHR₄₀)_(m)C(O)N(R₁)(CHR₄₀)_(m)C(O)NR₄₁R₄₂.

In certain embodiments, the invention provides compounds of structure I-R/S(95)-(98) where R_(a) is —(CH₂)_(m)C(O)N(R₁)(CH₂)_(m)C(O)NR₄₁R₄₂.

In certain embodiments, the invention provides compounds of structure I-R/S(95)-(98) where R_(a) is —(CHR₄₀)_(m)C(O)N(R₁)(CHR₄₀)_(m)C(O)OR₄₀.

In certain embodiments, the invention provides compounds of structure I-R/S(95)-(98) where R_(a) is —(CH₂)_(m)C(O)N(R₁)(CH₂)_(m)C(O)OR₄₀.

In certain embodiments, the invention provides compounds of structure I-R/S(95)-(98) where R_(a) is —(CHR₄₀)_(m)—S—S—R₄₀.

In certain embodiments, the invention provides compounds of structure I-R/S(95)-(98) where R_(a) is —(CH₂)_(m)—S—S—R₄₀.

In certain embodiments, the invention provides compounds of structure I-R/S(95)-(98) wherein, within the R_(a) group, R₁, R₄₀, R₄₁ and R₄₂ are hydrogen.

In certain embodiments, the invention provides compounds of structure I-R/S(95)-(98) wherein, within the R_(a) group, m is 1.

In certain embodiments, the invention provides compounds of structure I-R/S(95)-(98) wherein, within the R_(a) group, m is 2.

In certain embodiments, the invention provides compounds of structure I-R/S(95)-(98) where p is 1 and R₃ is alkyl.

In certain embodiments, the invention provides compounds of structure I-R/S(95)-(98) where p is 1 and R₃ is tert-butyl.

In certain embodiments, the invention provides compounds of structure I-R/S(95)-(98) where q is 1 and R₅ is alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(95)-(98) where q is 1 and R₅ is C₄₋₈ alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(95)-(98) where q is 1 and R₅ is C₇ alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(95)-(98) where p is 1, R₃ is alkyl, q is 1 and R₅ is C₄₋₈ alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(89)-(90) where m is 1, R_(t), is hydrogen and R₁ and R_(a) taken together with the atoms to which they are attached form a heterocyclyl optionally substituted (singly or multiply) with R₇. Representative compounds of this embodiment include compounds of the following structure (wherein “

” represents either or both the R and S form of the compound):

In certain embodiments, the invention provides compounds of structure I-R/S(89)-(90) where m is 2, R_(b) of the second (CR_(a)R_(b)) group is hydrogen and R₁ and R_(a) of the second (CR_(a)R_(b)) group taken together with the atoms to which they are attached form a heterocyclyl optionally substituted (singly or multiply) with R₇. Representative compounds of this embodiment include compounds of the following structure (wherein “

” represents either or both the R and S form of the compound):

In certain embodiments, the invention provides compounds of structure I-R/S(99)-(102) where R₁ and R_(a) taken together with the atoms to which they are attached form azetidinyl, pyrrolidinyl, piperidinyl optionally substituted (singly or multiply) with R₇. Representative compounds of this embodiment include compounds of the following structure (wherein “

” represents either or both the R and S form of the compound):

In certain embodiments, the invention provides compounds of structure I-R/S(99)-(110) where p is 1 and R₃ is alkyl.

In certain embodiments, the invention provides compounds of structure I-R/S(99)-(110) where p is 1 and R₃ is tert-butyl.

In certain embodiments, the invention provides compounds of structure I-R/S(99)-(110) where q is 1 and R₅ is alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(99)-(110) where q is 1 and R₅ is C₄₋₈ alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(99)-(110) where q is 1 and R₅ is C₇ alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(99)-(110) where p is 1, R₃ is alkyl, q is 1 and R₅ is C₄₋₈ alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(99)-(110) where R₇ is absent.

In certain embodiments, the invention provides compounds of structure I-R/S(99)-(110) where R₇ is hydroxyl.

In certain embodiments, the invention provides compounds of structure I-R/S(99)-(110) where R₇ is absent, p is 1, R₃ is alkyl, q is 1 and R₅ is C₄₋₈ alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(99)-(110) where R₅ is cycloalkyl substituted with R₁₀ and q is 1.

In certain embodiments, the invention provides compounds of structure I-R/S(99)-(110) where R₅ is cycloalkyl substituted with R₁₀ and q is 1, where R₁₀ is alkyl.

In certain embodiments, the invention provides compounds of structure I-R/S(99)-(110) where R₅ is cyclohexyl substituted with R₁₀ and q is 1, where R₁₀ is n-proply.

In certain embodiments, the invention provides compounds of structure I-R/S(99)-(110) where R₇ is hydroxyl, p is 1, R₃ is alkyl, q is 1 and R₅ is C₄₋₈ alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(84)-(85) where R_(e)is —N(R₁)—SO₂—R₈. Representative compounds of this embodiment include compounds of the following structure (wherein “

” represents either or both the R and S form of the compound):

In certain embodiments, the invention provides compounds of structure I-R/S(111)-(112) where R₁ is hydrogen.

In certain embodiments, the invention provides compounds of structure I-R/S(111)-(112) where R₁ is hydrogen an R₈ is alkyl optionally substituted (singly or multiply) with R₇.

In certain embodiments, the invention provides compounds of structure I-R/S(111)-(114) where R₁ is hydrogen an R₈ is alkyl.

In certain embodiments, the invention provides compounds of structure I-R/S(111)-(112) where R₁ is hydrogen an R₈ is methyl.

In certain embodiments, the invention provides compounds of structure I-R/S(111)-(112) where p is 1 and R₃ is alkyl.

In certain embodiments, the invention provides compounds of structure I-R/S(111)-(112) where p is 1 and R₃ is tert-butyl.

In certain embodiments, the invention provides compounds of structure I-R/S(111)-(112) where q is 1 and R₅ is alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(111)-(112) where q is 1 and R₅ is C₄₋₈ alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(111)-(112) where q is 1 and R₅ is C₇ alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(111)-(112) where p is 1, R₃ is alkyl, q is 1 and R₅ is C₄₋₈alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(111)-(112) where R₅ is cycloalkyl substituted with R₁₀ and q is 1.

In certain embodiments, the invention provides compounds of structure I-R/S(111)-(112) where R₅ is cycloalkyl substituted with R₁₀ and q is 1, where R₁₀ is alkyl.

In certain embodiments, the invention provides compounds of structure I-R/S(111)-(112) where R₅ is cyclohexyl substituted with R₁₀ and q is 1, where R₁₀ is n-propyl.

In certain embodiments, the invention provides compounds of structure I-R/S(84)-(85) where R₂ is —OH. Representative compounds of this embodiment include compounds of the following structure (wherein “

” represents either or both the R and S form of the compound):

In certain embodiments, the invention provides compounds of structure I-R/S(84)-(85) where R₂ is —N(R₁)(R₄₂). Representative compounds of this embodiment include compounds of the following structure (wherein “” represents either or both the R and S form of the compound):

In certain embodiments, the invention provides compounds of structure I-R/S(115)-(116) where R₄₁ and R₄₂ are independently R₄₀, —(CHR₄₀)_(n)—C(O)OR₄₀, —(CHR₄₀)_(n)—C(O)R₄₀, —(CH₂)_(n)N(R₁)(R₇), aryl or heteroaryl, which aryl or heteroaryl is optionally substituted (singly or multiply) with R₇.

In certain embodiments, the invention provides compounds of structure I-R/S(115)-(116) where R₄₁ is hydrogen and R₄₂ is alkyl optionally substituted (singly or multiply) with R₇.

In certain embodiments, the invention provides compounds of structure I-R/S(115)-(116) where R₄₁ is hydrogen and R₄₂ is —(CHR₄₀)_(n)C(O)OR₄₀.

In certain embodiments, the invention provides compounds of structure I-R/S(115)-(116) where R₄₁ is hydrogen and R₄₂ is —(CHR₄₀)_(n)C(O)R₄₀.

In certain embodiments, the invention provides compounds of structure I-R/S(115)-(116) where R₄₁ is hydrogen and R₄₂ is —(CHR₄₀)_(n)N(R₁)(R₇).

In certain embodiments, the invention provides compounds of structure I-R/S(115)-(116) where R₄₁ is hydrogen and R₄₂ is aryl optionally substituted (singly or multiply) with R₇.

In certain embodiments, the invention provides compounds of structure I-R/S(115)-(116) where R₄₁ is hydrogen and R₄₂ is heteroaryl optionally substituted (singly or multiply) with R₇.

In certain embodiments, the invention provides compounds of structure I-R/S(115)-(116) where R₄₁ and R₄₂ taken together with the N atom to which they are attached form a 3- to 7-membered heterocyclyl optionally substituted (singly or multiply) with R₇.

In certain embodiments, the invention provides compounds of structure I-R/S(115)-(116) where R₄₁ and R₄₂ taken together with the N atom to which they are attached form pyrazinyl, pyrimidinyl, pyridazinyl, thiadiazolyl, oxadiazolyl, imidazolinyl, hexahydropyrimidinyl, diazepanyl, triazinyl, imidazolyl, pyrrolidinyl, piperidinyl, piperazinyl, morpholinyl, pyrrolyl, pyrazolyl, triazolyl, tetrazolyl, oxazolyl, isoxazolyl, thiazolyl or pyridinyl, any of which may be optionally substituted (singly or multiply) with R₇.

In certain embodiments, the invention provides compounds of structure I-R/S(84)-(85) where R₂ is —N(R₁)(CR_(a)R_(b))_(m)CON(R₁)(R₄₀). Representative compounds of this embodiment include compounds of the following structure (wherein “

” represents either or both the R and S form of the compound):

In certain embodiments, the invention provides compounds of structure I-R/S( )-(118) where m is 1, R_(b) is hydrogen and R₁ and R_(a) taken together with the atoms to which they are attached form a heterocyclyl optionally substituted (singly or multiply) with R₇. Representative compounds of this embodiment include compounds of the following structure (wherein “

” represents either or both the R and S form of the compound):

In certain embodiments, the invention provides compounds of structure I-R/S(117)-(118) where m is 2, R_(b) of the second (CR_(a)R_(b)) group is hydrogen and R₁ and R_(a) of the second (CR_(a)R_(b)) group taken together with the atoms to which they are attached form a heterocyclyl optionally substituted (singly or multiply) with R₇. Representative compounds of this embodiment include compounds of the following structure (wherein “

” represents either or both the R and S form of the compound):

In certain embodiments, the invention provides compounds of structure I-R/S(119)-(122) where R₁ and R_(a) taken together with the atoms to which they are attached form azetidinyl, pyrrolidinyl, piperidinyl optionally substituted (singly or multiply) with R₇. Representative compounds of this embodiment include compounds of the following structure (wherein “

” represents either or both the R and S form of the compound):

In certain embodiments, the invention provides compounds of structure I-R/S(117)-(128) where p is 1 and R₃ is alkyl.

In certain embodiments, the invention provides compounds of structure I-R/S(117)-(128) where p is 1 and R₃ is tert-butyl.

In certain embodiments, the invention provides compounds of structure I-R/S(117)-(128) where q is 1 and R₅ is alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(117)-(128) where q is 1 and R₅ is C₄₋₈ alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(117)-(128) where q is 1 and R₅ is C₇ alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(117)-(128) where p is 1, R₃ is alkyl, q is 1 and R₅ is C₄₋₈ alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(117)-(128) where R₇ is absent or hydroxyl.

In certain embodiments, the invention provides compounds of structure I-R/S(117)-(128) where R₇ is absent or hydroxyl, p is 1, R₃ is alkyl, q is 1 and R₅ is C₄₋₈ alkoxy.

In certain embodiments, the invention provides compounds of structure I-R/S(117)-(128) where R₁ is hydrogen.

In certain embodiments, the invention provides compounds of structure I-R/S(117)-(128) where R₄₀ is R₇.

In certain embodiments, the invention provides compounds of structure I-R/S(117)-(128) where R₄₀ is R₇, R₇ is —(CR_(a)R_(b))_(m)S(O)₂R₈, and R₈ is —(CR_(a)R_(b))_(m)-L₂-(CR_(a)R_(b))_(m)—R₁.

In certain embodiments, the invention provides compounds of structure I-R/S(84)-(85) where R₂ is —N(R₁)(CR_(a)R_(b))_(m)N(R₁)C(O)O(R₈). Representative compounds of this embodiment include compounds of the following structure (wherein “

” represents either or both the R and S form of the compound):

In certain embodiments, the invention provides compounds of structure I-R/S(84)-(85) where R₂ is —N(R₁)(CR_(a)R_(b))_(m)N(R₁)(R₇). Representative compounds of this embodiment include compounds of the following structure (wherein “

” represents either or both the R and S form of the compound):

In certain embodiments, the invention provides compounds of structure I-R/S(84)-(85) where R₂ is —N(R₁)(CR_(a)R_(b))_(m)CON(R₁)heterocyclyl. Representative compounds of this embodiment include compounds of the following structure (wherein “

” represents either or both the R and S form of the compound):

In certain embodiments, the invention provides compounds of structure I-R/S(84)-(85) where R₂ is —N(R₁)(CR_(a)R_(b))_(m)-heterocyclyl, which heterocyclyl may be optionally substituted with R₇. Representative compounds of this embodiment include compounds of the following structure (wherein “

” represents either or both the R and S form of the compound):

In certain embodiments, the invention provides compounds of structures I-R/S(87)-(88) where R₂ is as shown in each of structures I-R/S(91) through I-R/S(136). For example, structures I-R/S(91)-(92) depict structures I-R/S(87)-(88) when R₂ is —N(R₁)(CR_(a)R_(b))_(m)COOR₈. In a similar manner, the R₂ groups shown in each of structures I-R/S(93) through I-R/S(136) may serve as the R₂ group of structures I-R/S(87)-(88).

In certain embodiments, the invention provides a compound of Formula I-R and/or Formula I-S where Y₁ and Y₂ are null and Z is —S(O)₂—. Representative compounds of this embodiment include compounds of the following structures (wherein “

” represents either or both the R and S form of the compound):

In certain embodiments, the invention provides compounds of structure I-R/S(137) where A is pyrimidinyl, B is phenyl and C is phenyl. Representative compounds of this embodiment include compounds of the following structure (wherein “

” represents either or both the R and S form of the compound):

In certain embodiments, the invention provides a compound of Formula I-R and/or Formula I-S where Y₁ is null, Y₂ is —O— and Z is —C(O)—. Representative compounds of this embodiment include compounds of the following structures (wherein “

” represents either or both the R and S form of the compound):

In certain embodiments, the invention provides a compound of Formula I-R and/or Formula I-S where Y₁ is NH, Y₂ is null and Z is —C(O)—. Representative compounds of this embodiment include compounds of the following structures (wherein “

” represents either or both the R and S form of the compound):

In certain embodiments, the invention provides a compound of Formula I-R and/or Formula I-S where C is aryl and A and C are taken together to form a fused bicyclic ring system between the 5-, 6- or 7-membered heterocyclyl of A and the aryl of C. Representative compounds of this embodiment include compounds of the following structures (wherein “

” represents either or both the R and S form of the compound):

In certain embodiments, the invention provides compounds of structure I-R/S(141) where Y₁ is null and Z is —C(O)—. Representative compounds of this embodiment include compounds of the following structures where one or both of X_(A) and X_(B) is nitrogen (wherein “

” represents either or both the R and S form of the compound):

In certain embodiments, the invention provides compounds of structures I-R/S and I-R/S(1)-(29), (49)-(66), (84)-(85), (93)-(137) and (139)-(140) wherein C is:

In certain embodiments, the invention provides compounds of structures I-R/S and I-R/S(1)-(29), (49)-(66), (84)-(85), (93)-(137) and (139)-(140) wherein C is:

In certain embodiments, the invention provides compounds of structures I-R/S and I-R/S(1)-(29), (49)-(66), (84)-(85), (93)-(137) and (139)-(140) wherein C is:

In certain embodiments, the invention provides compounds of structures I-R/S and I-R/S(1)-(29), (49)-(66), (84)-(85), (93)-(137) and (139)-(140) wherein C is:

In certain embodiments, the invention provides compounds of structures I-R/S and I-R/S(1)-(29), (49)-(66), (84)-(85), (93)-(137) and (139)-(140) wherein C is:

In certain embodiments, the invention provides compounds of structures I-R/S and I-R/S(1)-(29), (49)-(66), (84)-(85), (93)-(137) and (139)-(140) wherein C is:

In certain embodiments, the invention provides compounds of structures I-R/S and I-R/S(1)-(29), (49)-(66), (84)-(85), (93)-(137) and (139)-(140) wherein C is:

In certain embodiments, the invention provides compounds of structures I-R/S and I-R/S(1)-(29), (49)-(66), (84)-(85), (93)-(137) and (139)-(140) wherein C is:

In certain embodiments, the invention provides compounds of structures I-R/S and I-R/S(1)-(29), (49)-(66), (84)-(85), (93)-(137) and (139)-(140) wherein C is:

In certain embodiments, the invention provides compounds of structures I-R/S and I-R/S(1)-(29), (49)-(66), (84)-(85), (93)-(137) and (139)-(140) wherein C is:

In certain embodiments, the invention provides compounds of structures I-R/S and I-R/S(1)-(29), (49)-(66), (84)-(85), (93)-(137) and (139)-(140) wherein C is:

In certain embodiments, the invention provides compounds of structures I-R/S and I-R/S(1)-(29), (49)-(66), (84)-(85), (93)-(137) and (139)-(140) wherein C is:

In certain embodiments, the invention provides compounds of structures I-R/S and I-R/S(1)-(29), (49)-(66), (84)-(85), (93)-(137) and (139)-(140) wherein C is:

In certain embodiments, the invention provides compounds of structures I-R/S and I-R/S(1)-(29), (49)-(66), (84)-(85), (93)-(137) and (139)-(140) wherein C is:

In certain embodiments, the invention provides compounds of structures I-R/S and I-R/S(1)-(29), (49)-(66), (84)-(85), (93)-(137) and (139)-(140) wherein C is:

In certain embodiments, the invention provides a pharmaceutical composition comprising a compound of the invention together with at least one pharmaceutically acceptable carrier, diluent or excipient.

In certain embodiments, the invention provides a pharmaceutical composition comprising a compound of the invention and a second medicament. In certain of such embodiments, the second medicament is a GLP-1 agonist or a DPPIV inhibitor.

In certain embodiments, the invention provides a method of use of compounds of the invention for preparation of a medicament.

In certain embodiments, the invention provides a pharmaceutical combination comprising a compound of the invention and a second medicament. In various such embodiments, the second medicament is an agonist, antauonist, or modulator for glucagon receptor, GIP receptor, GLP-2 receptor, or PTH receptor, or glucagon-like peptide 1 (GLP-1) receptor. In various such embodiments, the second medicament is exenatide, liraglutide, taspoglutide, albiglutide, or lixisenatide or other insulin regulating petptide. In various such embodiments, the second medicament is a DPPIV inhibitor, such as sitagliptin. In various such embodiments, the second medicament is medically indicated for the treatment of type II diabetes. In various combinations, the second medicament is a sodium-glucose co-transporter (SGLT) inhibitor, such as a SGLT1 and/or SGLT2 inhibitor, such as dapagliflozin, empagliflozin and canagliflozin. In various such embodiments, the second medicament is a biguanide such as metformin, a sulfonylurea such as glibenclamide, glipizide, gliclazide, and glimepiride, a meglitinide such as repaglinide and mateglinide, a thiazolidinedione such as pioglitazone and rosiglitazone, an α-glucosidase inhibitor such as acarbose and miglitol, a bile acid sequestrant such as colesevelam, and/or a dopamine-2 agonist such as bromocriptine.

In certain embodiments, the invention provides a pharmaceutical composition comprising a compound of the invention and a second medicament, wherein the second medicament is metformin.

In certain embodiments, the invention provides a pharmaceutical composition comprising a compound of the invention and a second medicament, wherein the second medicament is sitagliptin.

In certain embodiments, the invention provides a pharmaceutical composition comprising a compound of the invention and a second medicament, wherein the second medicament is dapagliflozin, empagliflozin or canagliflozin.

In certain embodiments, a method is provided for activation, potentiation or agonism of a glucagon-like peptide 1 comprising contacting the receptor with an effective amount of a compound, pharmaceutical composition or pharmaceutical combination of the invention.

In further embodiments, a method is provided for activation or agonism of a GLP-1 receptor by contacting the receptor with an effective amount of an invention compound and GLP-1 peptides GLP-1(9-36) and GLP-1(7-36), pharmaceutical composition or pharmaceutical combination, wherein the GLP-1 receptor is disposed within a living mammal; in certain embodiments wherein such mammal is a human.

In certain embodiments, a method is provided for treatment of a malcondition in a subject for which activation, potentiation or agonism of a GLP-1 receptor is medically indicated, by administering an effective amount of an invention compound to the subject at a frequency and for a duration of time sufficient to provide a beneficial effect to the patient. In yet further embodiments, a method is provided for treatment of a malcondition in a patient for which activation, potentiation, or agonism of a GLP-1 receptor is medically indicated, by administering an effective amount of an invention compound to the patient at a frequency and for a duration of time sufficient to provide a beneficial effect to the patient. wherein the malcondition comprises type I diabetes, type II diabetes, gestational diabetes, obesity, excessive appetite, insufficient satiety, or metabolic disorder. In certain embodiments, the subject is a patient or a human being. In certain embodiments, the human being is afflicted with, or at risk of developing, a disease or condition selected from the group consisting of type I diabetes, type II diabetes, gestational diabetes, obesity, excessive appetite, insufficient satiety, and metabolic disorder. In certain of such embodiments, said disease is type I diabetes or type II diabetes.

In certain embodiments, the invention provides methods for synthesis of certain compounds including compounds of the invention as more fully illustrated herein. In certain other embodiments, the invention provides certain intermediate compounds associated with such methods of synthesis as illustrated herein.

In certain embodiments, methods are provided for use of an invention compound for preparation of a medicament adapted for treatment of a disorder or a malcondition wherein activation or inhibition of a GLP-1 receptor is medically indicated. In certain embodiments, the malcondition comprises type I diabetes, type II diabetes, gestational diabetes, obesity, excessive appetite, insufficient satiety, and metabolic disorder. Preferably said disease is type I diabetes or type II diabetes. In other embodiments, the malcondition is non-alcoholic fatty liver disease (NAFLD) and/or non-alcoholic steatohepatitis (NASH).

In certain embodiments, the method additionally comprises administering to the subject a second medicament selected from the group of biguanides, peptidic GLP-1 agonists and DPPIV inhibitors, wherein such second medicament is either a component of the pharmaceutical composition or a second pharmaceutical composition. In certain of such embodiments, the second medicament can be metformin, exenatide or sitagliptin.

As used in the specification and the appended claims, the singular forms “a,” “an” and “the” include plural referents unless the context clearly dictates otherwise.

As used herein, “individual” (as in the subject of the treatment) means both mammals and non-mammals. Mammals include, for example, humans; non-human primates, e.g., apes and monkeys; cattle; horses; sheep; and goats. Non-mammals include, for example, fish and birds.

A “receptor”, as is well known in the art, is a biomolecular entity usually comprising a protein that specifically binds a structural class of ligands or a single native ligand in a living organism, the binding of which causes the receptor to transduce the binding signal into another kind of biological action, such as signaling a cell that a binding event has occurred, which causes the cell to alter its function in some manner. An example of transduction is receptor binding of a ligand causing alteration of the activity of a “G-protein” in the cytoplasm of a living cell. Any molecule, naturally occurring or not, that binds to a receptor and activates it for signal transduction, is referred to as an “agonist” or “activator.” Any molecule, naturally occurring or not, that binds to a receptor, but does not cause signal transduction to occur, and which can block the binding of an agonist and its consequent signal transduction, is referred to as an “antagonist.” Certain molecules bind to receptors at locations other than the binding sites of their natural ligands and such allosteric binding molecules may potentiate, activate or agonize the receptor and may enhance the effect of a natural ligand or a co-administered ligand.

A “GLP-1 compound” or “GLP-1 agonist” or “GLP-1 activator” or “GLP-1 inhibitor” or “GLP-1 antagonist” or “GLP-1 potentiator” or “GLP-1 modulator” as the terms are used herein refer to compounds that interact in some way with the GLP-1 receptor. They can be agonists, potentiators, or activators, or they can be antagonists or inhibitors. A “GLP-1 compound” of the invention can be selective for action of the GLP-1 receptor family.

“Substantially” as the term is used herein means completely or almost completely; for example, a composition that is “substantially free” of a component either has none of the component or contains such a trace amount that any relevant functional property of the composition is unaffected by the presence of the trace amount, or a compound is “substantially pure” is there are only negligible traces of impurities present.

Substantially enantiomerically or diastereomerically pure means a level of enantiomeric or diastereomeric enrichment of one enantiomer with respect to the other enantiomer or diastereomer of at least about 80%, and more preferably in excess of 80%, 85%, 90%, 95%, 98%, 99%, 99.5% or 99.9%.

“Treating” or “treatment” within the meaning herein refers to an alleviation of symptoms associated with a disorder or disease, or inhibition of further progression or worsening of those symptoms, or prevention or prophylaxis of the disease or disorder.

The expression “effective amount”, when used to describe use of a compound of the invention in providing therapy to a patient suffering from a disorder or malcondition mediated by GLP-1 refers to the amount of a compound of the invention that is effective to bind to as an agonist or as an antagonist a GLP-1 receptor in the individual's tissues, wherein the GLP-1 is implicated in the disorder, wherein such binding occurs to an extent sufficient to produce a beneficial therapeutic effect on the patient. Similarly, as used herein, an “effective amount” or a “therapeutically effective amount” of a compound of the invention refers to an amount of the compound that alleviates, in whole or in part, symptoms associated with the disorder or condition, or halts or slows further progression or worsening of those symptoms, or prevents or provides prophylaxis for the disorder or condition. In particular, a “therapeutically effective amount” refers to an amount effective, at dosages and for periods of time necessary, to achieve the desired therapeutic result by acting as an agonist of GLP-1 activity. A therapeutically effective amount is also one in which any toxic or detrimental effects of compounds of the invention are outweighed by the therapeutically beneficial effects. For example, in the context of treating a malcondition mediated by activation of a GLP-1 receptor, a therapeutically effective amount of a GLP-1 receptor agonist of the invention is an amount sufficient to control the malcondition, to mitigate the progress of the malcondition, or to relieve the symptoms of the malcondition. Examples of malconditions that can be so treated include, but not limited to, type II diabetes, as well as NAFLD and NASH.

All chiral, diastereomeric, racemic forms of a structure are intended, unless a particular stereochemistry or isomeric form is specifically indicated. Compounds used in the present invention can include enriched or resolved optical isomers at any or all asymmetric atoms as are apparent from the depictions, at any degree of enrichment. Both racemic and diastereomeric mixtures, as well as the individual optical isomers can be synthesized so as to be substantially free of their enantiomeric or diastereomeric partners, and these are all within the scope of certain embodiments of the invention.

The isomers resulting from the presence of a chiral center comprise a pair of non-superimposable isomers that are called “enantiomers.” Single enantiomers of a pure compound are optically active, i.e., they are capable of rotating the plane of plane polarized light. Single enantiomers are designated according to the Cahn-Ingold-Prelog system. Once the priority ranking of the four groups is determined, the molecule is oriented so that the lowest ranking group is pointed away from the viewer. Then, if the descending rank order of the other groups proceeds clockwise, the molecule is designated (R) and if the descending rank of the other groups proceeds counterclockwise, the molecule is designated (S). In the example in Scheme 14, the Cahn-Ingold-Prelog ranking is A>B>C>D. The lowest ranking atom, D is oriented away from the viewer.

“Isolated optical isomer” means a compound which has been substantially purified from the corresponding optical isomer(s) of the same formula. Preferably, the isolated isomer is at least about 80%, and preferably at least 80% or even at least 85% pure. In other embodiments, the isolated isomer is at least 90% pure or at least 98% pure, or at least about 99% pure, by weight.

Enantiomers are sometimes called optical isomers because a pure enantiomer rotates plane-polarized light in a particular direction. If the light rotates clockwise, then that enantiomer is labeled “(+)” or “d” for dextrorotatory, its counterpart will rotate the light counterclockwise and is labeled “(−)” or “1” for levorotatory.

The terms “racemate” and “racemic mixture” are frequently used interchangeably. A racemate is an equal mixture of two enantiomers. A racemate is labeled “(±)” because it is not optically active (i.e., will not rotate plane-polarized light in either direction since its constituent enantiomers cancel each other out).

It is understood that due to chemical properties (i.e., resonance lending some double bond character to the C—N bond) of restricted rotation about the amide bond linkage (as illustrated below) it is possible to observe separate rotamer species and even, under some circumstances, to isolate such species, example shown below. It is further understood that certain structural elements, including steric bulk or substituents on the amide nitrogen, may enhance the stability of a rotamer to the extent that a compound may be isolated as, and exist indefinitely, as a single stable rotamer. The present invention therefore includes any possible stable rotamers of compounds of the invention which are biologically active in the treatment of type I diabetes, type II diabetes, gestational diabetes, obesity, excessive appetite, insufficient satiety, metabolic disorder, non-alcoholic fatty liver disease and/or non-alcoholic steatohepatitis.

The preferred compounds of the present invention have a particular spatial arrangement of substituents on the aromatic rings, which are related to the structure activity relationship demonstrated by the compound class. Often such substitution arrangement is denoted by a numbering system; however, numbering systems are often not consistent between different ring systems. In six-membered aromatic systems, the spatial arrangements are specified by the common nomenclature “para” for 1,4-substitution, “meta” for 1,3-substitution and “ortho” for 1,2-substitution as shown below.

All structures encompassed within a claim are “chemically feasible”, by which is meant that the structure depicted by any combination or subcombination of optional substituents meant to be recited by the claim is physically capable of existence with at least some stability as can be determined by the laws of structural chemistry and by experimentation. Structures that are not chemically feasible are not within a claimed set of compounds. Further, isotopes of the atoms depicted (such as deuterium and tritium in the case of hydrogen) are encompassed within the scope of this invention. For example, it should be understood that depiction herein of compounds having one or more hydrogen atoms is intended to encompass compounds having such hydrogen atoms replaced with deuterium (or tritium) at one or more locations of such compounds. Such “deuterated compounds”, whether partial (i.e, less than all the hydrogen atoms replaced with deuterium) or complete (i.e., all the hydrogen atoms replaced with deuterium) is within the scope of the compounds of this invention.

In general, “substituted” refers to an organic group as defined herein in which one or more bonds to a hydrogen atom contained therein are replaced by one or more bonds to a non-hydrogen atom such as, but not limited to, a halogen (i.e., F, Cl, Br, and I); an oxygen atom in groups such as hydroxyl groups, alkoxy groups, aryloxy groups, aralkyloxy groups, oxo(carbonyl) groups, carboxyl groups including carboxylic acids, carboxylates, and carboyxlate esters; a sulfur atom in groups such as thiol groups, alkyl and aryl sulfide groups, sulfoxide groups, sulfone groups, sulfonyl groups, and sulfonamide groups; a nitrogen atom in groups such as amines, hydroxylamines, nitriles, nitro groups, N-oxides, hydrazides, azides, and enamines; and other heteroatoms in various other groups. Non-limiting examples of substituents that can be bonded to a substituted carbon (or other) atom include F, Cl, Br, I, OR′, OC(O)N(R′)₂, CN, CF₃, OCF₃, R′, O, S, C(O), S(O), methylenedioxy, ethylenedioxy, N(R′)₂, SR′, SOR′, SO₂R′, SO₂N(R′)₂, SO₃R′, C(O)R′, C(O)C(O)R′, C(O)CH₂C(O)R′, C(S)R′, C(O)OR′, OC(O)R′, C(O)N(R′)₂, OC(O)N(R′)₂, C(S)N(R′)₂, (CH₂)₀₋₂NHC(O)R′, (CH₂)₀₋₂N(R′)N(R′)₂, N(R′)N(R′)C(O)R′, N(R′)N(R′)C(O)OR′, N(R′)N(R′)CON(R′)₂, N(R′)SO₂R′, N(R′)SO₂N(R′)₂, N(R′)C(O)OR′, N(R′)C(O)R′, N(R′)C(S)R′, N(R′)C(O)N(R′)₂, N(R′)C(S)N(R′)₂, N(COR′)COR′ N(OR′)R′, C(═NH)N(R′)₂, C(O)N(OR′)R′, or C(═NOR′)R′ wherein R′ can be hydrogen or a carbon-based moiety, and wherein the carbon-based moiety can itself be further substituted.

Substituted alkyl, alkenyl, alkynyl, cycloalkyl, and cycloalkenyl groups as well as other substituted groups also include groups in which one or more bonds to a hydrogen atom are replaced by one or more bonds, including double or triple bonds, to a carbon atom, or to a heteroatom such as, but not limited to, oxygen in carbonyl (oxo), carboxyl, ester, amide, imide, urethane, and urea groups; and nitrogen in imines, hydroxyimines, oximes, hydrazones, amidines, guanidines, and nitriles.

Substituted ring groups include substituted aryl, heterocyclyl and heteroaryl groups. Substituted ring groups can be substituted by one or more substituents at any available ring position. In some embodiments, two substituents on a substituted ring group may taken together with the ring to which they are attached to form a ring, such that the two rings are fused together. For example, benzodioxolyl is a fused ring system formed by two substituents taken together on a phenyl group.

Such substituted ring groups also include rings and fused ring systems in which a bond to a hydrogen atom is replaced with a bond to a carbon atom. Therefore, substituted aryl, heterocyclyl and heteroaryl groups can also be substituted with alkyl, alkenyl, cycloalkyl, aryl, heteroaryl, and alkynyl groups as defined herein, which can themselves be further substituted.

The linking groups (e.g., L₁ and L₂) of Formula I-R or I-S are partial structures which may be represented by a formula, say, for example, —N(R₁)—C(O)—, which is read from left-to-right. Accordingly, the nitrogen atom of the —N(R₁)—C(O)— linker will be attached to the proximal end of the structure of Formula I-R or I-S, and the carbonyl carbon atom of the —N(R₁)—C(O)— linker will be attached to the distal end of the structure of Formula I-R or I-S.

The term “heteroatoms” as used herein refers to non-carbon and non-hydrogen atoms, capable of forming covalent bonds with carbon, and is not otherwise limited. Typical heteroatoms are N, O, and S. When sulfur (S) is referred to, it is understood that the sulfur can be in any of the oxidation states in which it is found, thus including sulfoxides (R—S(O)—R′) and sulfones (R—S(O)₂—R′), unless the oxidation state is specified; thus, the term “sulfone” encompasses only the sulfone form of sulfur; the term “sulfide” encompasses only the sulfide (R—S—R′) form of sulfur. When the phrases such as “heteroatoms selected from the group consisting of 0, NH, NR′ and S,” or “[variable] is O, S . . . ” are used, they are understood to encompass all of the sulfide, sulfoxide and sulfone oxidation states of sulfur.

Alkyl groups include straight chain and branched alkyl groups and cycloalkyl groups having from 1 to about 20 carbon atoms, and typically from 1 to 12 carbons (C₁-C₁₂ alkyl), or, in some embodiments, from 1 to 8 carbon atoms (C₁-C₈ alkyl), or, in some embodiments, from 1 to 4 carbon atoms (C₁-C₄ alkyl). In the case of cycloalkyl groups, such groups have from 3-20 carbon atoms. Examples of straight chain alkyl groups include, but are not limited to, methyl, ethyl, n-propyl, n-butyl, n-pentyl, n-hexyl, n-heptyl, and n-octyl groups. Examples of branched alkyl groups include, but are not limited to, isopropyl, iso-butyl, sec-butyl, t-butyl, neopentyl, isopentyl, and 2,2-dimethylpropyl groups. Alkyl groups as used herein may optionally include one or more further substituent groups. Representative substituted alkyl groups can be substituted one or more times with any of the groups listed above, for example, amino, hydroxy, cyano, carboxy, nitro, thio, alkoxy, and halogen groups.

Cycloalkyl groups are alkyl groups forming a ring structure, which can be substituted or unsubstituted, wherein the ring is either completely saturated, partially unsaturated, or fully unsaturated, wherein if there is unsaturation, the conjugation of the pi-electrons in the ring do not give rise to aromaticity. Examples of cycloalkyl include, but are not limited to, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, and cyclooctyl groups. In some embodiments, the cycloalkyl group has 3 to 8 ring members, whereas in other embodiments the number of ring carbon atoms range from 3 to 5, 3 to 6, or 3 to 7. Cycloalkyl groups further include polycyclic cycloalkyl groups such as, but not limited to, norbornyl, adamantyl, bornyl, camphenyl, isocamphenyl, and carenyl groups, and fused rings such as, but not limited to, decalinyl, and the like. Cycloalkyl groups also include rings that are substituted with straight or branched chain alkyl groups as defined above. Representative substituted cycloalkyl groups can be mono-substituted or substituted one or more times with any of the groups listed above, for example, but not limited to, amino, hydroxy, cyano, carboxy, nitro, thio, alkoxy, and halogen groups.

The terms “carbocyclic” and “carbocycle” denote a ring structure wherein the atoms of the ring are carbon. In some embodiments, the carbocycle has 3 to 8 ring members, whereas in other embodiments the number of ring carbon atoms is 4, 5, 6, or 7. Unless specifically indicated to the contrary, the carbocyclic ring can be substituted with as many as N substituents wherein N is the size of the carbocyclic ring with for example, amino, hydroxy, cyano, carboxy, nitro, thio, alkoxy, and halogen groups.

(Cycloalkyl)alkyl groups, also denoted cycloalkylalkyl, are alkyl groups as defined above in which a hydrogen or carbon bond of the alkyl group is replaced with a bond to a cycloalkyl group as defined above.

Alkenyl groups include straight and branched chain and cyclic alkyl groups as defined above, except that at least one double bond exists between two carbon atoms. Thus, alkenyl groups have from 2 to about 20 carbon atoms, and typically from 2 to 12 carbons or, in some embodiments, from 2 to 8 carbon atoms. Examples include, but are not limited to —CH═CH₂, —CH═CH(CH₃), —CH═C(CH₃)₂, —C(CH₃)═CH₂, —C(CH₃)═CH(CH₃), —C(CH₂CH₃)═CH₂, —CH═CHCH₂CH₃, —CH═CH(CH₂)₂CH₃, —CH═CH(CH₂)₃CH₃, —CH═CH(CH₂)₄CH₃, vinyl, cyclohexenyl, cyclopentenyl, cyclohexadienyl, butadienyl, pentadienyl, and hexadienyl among others.

The term “cycloalkenyl” alone or in combination denotes a cyclic alkenyl group wherein at least one double bond is present in the ring structure. Cycloalkenyl groups include cycloalkyl groups having at least one double bond between two adjacent carbon atoms. Thus for example, cycloalkenyl groups include but are not limited to cyclohexenyl, cyclopentenyl, and cyclohexadienyl groups, as well as polycyclic and/or bridging ring systems such as adamantine.

(Cycloalkenyl)alkyl groups are alkyl groups as defined above in which a hydrogen or carbon bond of the alkyl group is replaced with a bond to a cycloalkenyl group as defined above.

Alkynyl groups include straight and branched chain alkyl groups, except that at least one triple bond exists between two carbon atoms. Thus, alkynyl groups have from 2 to about 20 carbon atoms, and typically from 2 to 12 carbons or, in some embodiments, from 2 to 8 carbon atoms. Examples include, but are not limited to —C≡CH, —C≡C(CH₃), —C≡C(CH₂CH₃), —CH₂C≡CH, —CH₂C≡C(CH₃), and —CH₂C≡C(CH₂CH₃), among others.

Aryl groups are cyclic aromatic hydrocarbons that do not contain heteroatoms. Thus aryl groups include, but are not limited to, phenyl, azulenyl, heptalenyl, biphenyl, indacenyl, fluorenyl, phenanthrenyl, triphenylenyl, pyrenyl, naphthacenyl, chrysenyl, biphenylenyl, anthracenyl, and naphthyl groups. In some embodiments, aryl groups contain 6-14 carbons in the ring portions of the groups. The phrase “aryl groups” includes groups containing fused rings, such as fused aromatic-aliphatic ring systems (e.g., indanyl, tetrahydronaphthyl, and the like), and also includes substituted aryl groups that have other groups, including but not limited to alkyl, halo, amino, hydroxy, cyano, carboxy, nitro, thio, or alkoxy groups, bonded to one of the ring atoms. Representative substituted aryl groups can be mono-substituted or substituted more than once, such as, but not limited to, 2-, 3-, 4-, 5-, or 6-substituted phenyl or naphthyl groups, which can be substituted with groups including but not limited to those listed above.

Aralkyl groups are alkyl, alkenyl or alkynyl groups as defined above in which a hydrogen atom of an alkyl, alkenyl or alkynyl group is replaced with an aryl group as defined above. Representative aralkyl groups include benzyl (—CH₂phenyl), phenylethyl (—CH₂CH₂phenyl) and phenylethylene (—CH═CHphenyl) groups and fused (cycloalkylaryl)alkyl groups such as 4-ethyl-indanyl. The aryl moiety or the alkyl, alkenyl or alkynyl moiety or both are optionally substituted with other groups, including but not limited to alkyl, halo, amino, hydroxy, cyano, carboxy, nitro, thio, or alkoxy groups.

Heterocyclyl or heterocyclic groups include aromatic and non-aromatic ring moieties containing 3 or more ring members, of which one or more is a heteroatom such as, but not limited to, N, O, S, or P. In some embodiments, heterocyclyl groups include 3 to 20 ring members, whereas other such groups have 3 to 15 ring members, including for example single ring systems containing 5, 6 or 7 ring members. At least one ring contains a heteroatom, but every ring in a polycyclic system need not contain a heteroatom. For example, a dioxolanyl ring and a benzodioxolanyl ring system (methylenedioxyphenyl ring system) are both heterocyclyl groups within the meaning herein. A heterocyclyl group designated as a C₂-heterocyclyl can be a 5-ring with two carbon atoms and three heteroatoms, a 6-ring with two carbon atoms and four heteroatoms, and so forth. Likewise a C₄-heterocyclyl can be a 5-ring with one heteroatom, a 6-ring with two heteroatoms, and so forth. The number of carbon atoms plus the number of heteroatoms sums up to equal the total number of ring atoms.

The term “heterocyclyl” includes fused ring species including those having fused aromatic and non-aromatic groups. The phrase also includes polycyclic and/or bridging ring systems containing a heteroatom such as, but not limited to, quinuclidyl and 7-azabicyclo[2.2.1]heptane, and also includes heterocyclyl groups that have substituents, including but not limited to alkyl, halo, amino, hydroxy, cyano, carboxy, nitro, thio, or alkoxy groups, bonded to one of the ring members. A heterocyclyl group as defined herein can be a heteroaryl group or a partially or completely saturated cyclic group including at least one ring heteroatom. Heterocyclyl groups include, but are not limited to, pyrazinyl, pyrimidinyl, pyridazinyl, thiadiazolyl, oxadiazolyl, imidazolinyl, hexahydropyrimidinyl, diazepanyl, triazinyl, imidazolyl, pyrrolidinyl, furanyl, tetrahydrofuranyl, tetrahydro-2H-pyranyl, dioxolanyl, piperidinyl, piperazinyl, morpholinyl, pyrrolyl, pyrazolyl, triazolyl, tetrazolyl, oxazolyl, isoxazolyl, thiazolyl, pyridinyl, thiophenyl, benzothiophenyl, benzofuranyl, dihydrobenzofuranyl, indolyl, dihydroindolyl, azaindolyl, indazolyl, benziniidazolyl, azabenzimidazolyl, benzoxazolyl, benzothiazolyl, benzothiadiazolyl, imidazopyridinyl, isoxazolopyridinyl, thianaphthalenyl, purinyl, xanthinyl, adeninyl, guaninyl, quinolinyl, isoquinolinyl, tetrahydroquinolinyl, quinoxalinyl, and quinazolinyl groups. Heterocyclyl groups can be substituted. Representative substituted heterocyclyl groups can be mono-substituted or substituted more than once, including but not limited to, rings containing at least one heteroatom which are mono, di, tri, tetra, penta, hexa, or higher-substituted with substituents such as those listed above, including but not limited to alkyl, halo, amino, hydroxy, cyano, carboxy, nitro, thio, and alkoxy groups, and in the case of two substituents on the same carbon atom of the heterocycle include oxo (═O) and thioxo (═S).

Heteroaryl groups are aromatic ring moieties containing 5 or more ring members, of which, one or more is a heteroatom such as, but not limited to, N, O, and S. A heteroaryl group designated as a C₂-heteroaryl can be a 5-ring with two carbon atoms and three heteroatoms, a 6-ring with two carbon atoms and four heteroatoms and so forth. Likewise a C₄-heteroaryl can be a 5-ring with one heteroatom, a 6-ring with two heteroatoms, and so forth. The number of carbon atoms plus the number of heteroatoms sums up to equal the total number of ring atoms. Heteroaryl groups include, but are not limited to, groups such as pyrrolyl, pyrazolyl, pyridinyl, pyridazinyl, pyrimidyl, pyrazyl, pyrazinyl, pyrimidinyl, thiadiazolyl, imidazolyl, oxadiazolyl, thienyl, triazolyl, tetrazolyl, triazinyl, thiazolyl, thiophenyl, oxazolyl, isoxazolyl, benzothiophenyl, benzofuranyl, indolyl, azaindolyl, indazolyl, benzimidazolyl, azabenzimidazolyl, benzoxazolyl, benzothiazolyl, benzothiadiazolyl, imidazopyridinyl, isoxazolopyridinyl, thianaphthalenyl, purinyl, xanthinyl, adeninyl, guaninyl, quinolinyl, isoquinolinyl, tetrahydroquinolinyl, tetrahydroisoquinolinyl, quinoxalinyl, and quinazolinyl groups. The terms “heteroaryl” and “heteroaryl groups” include fused ring compounds such as wherein at least one ring, but not necessarily all rings, are aromatic, including tetrahydroquinolinyl, tetrahydroisoquinolinyl, indolyl and 2,3-dihydro indolyl. The term also includes heteroaryl groups that have other groups bonded to one of the ring members, including but not limited to alkyl, halo, amino, hydroxy, cyano, carboxy, nitro, thio, or alkoxy groups. Representative substituted heteroaryl groups can be substituted one or more times with groups such as those listed above.

Additional examples of aryl and heteroaryl groups include but are not limited to phenyl, biphenyl, indenyl, naphthyl (1-naphthyl, 2-naphthyl), N-hydroxytetrazolyl, N-hydroxytriazolyl, N-hydroxyimidazolyl, anthracenyl (1-anthracenyl, 2-anthracenyl, 3-anthracenyl), thiophenyl (2-thienyl, 3-thienyl), furyl (2-furyl, 3-furyl), indolyl, oxadiazolyl (1,2,4-oxadiazolyl, 1,3,4-oxadiazolyl), thiadiazolyl (1,2,4-thiadiazolyl, 1,3,4-thiadiazolyl), isoxazolyl, quinazolinyl, fluorenyl, xanthenyl, isoindanyl, benzhydryl, acridinyl, thiazolyl, pyrrolyl (2-pyrrolyl), pyrazolyl (3-pyrazolyl), imidazolyl (1-imidazolyl, 2-imidazolyl, 4-imidazolyl, 5-imidazolyl), triazolyl (1,2,3-triazol-1-yl, 1,2,3-triazol-2-yl, 1,2,3-triazol-4-yl, 1,2,4-triazol-3-yl), oxazolyl (2-oxazolyl, 4-oxazolyl, 5-oxazolyl), thiazolyl (2-thiazolyl, 4-thiazolyl, 5-thiazolyl), pyridyl (2-pyridyl, 3-pyridyl, 4-pyridyl, pyrimidinyl (2-pyrimidinyl, 4-pyrimidinyl, 5-pyrimidinyl, 6pyrimidinyl), pyrazinyl, pyridazinyl (3-pyridazinyl, 4-pyridazinyl, 5-pyridazinyl), prazolo[1,5-α]pyridinyl, quinolyl (2-quinolyl, 3-quinolyl, 4-quinolyl, 5-quinolyl, 6-quinolyl, 7-quinolyl, 8-quinolyl), isoquinolyl (1-isoquinolyl, 3-isoquinolyl, 4-isoquinolyl, 5-isoquinolyl, 6-isoquinolyl, 7-isoquinolyl, 8-isoquinolyl), benzo[b]furanyl (2-benzo[b]furanyl, 3-benzo[b]furanyl, 4-benzo[b]furanyl, 5-benzo[b]furanyl, 6-benzo[b]furanyl, 7-benzo[b]furanyl), isobenzofuranyl, 2,3-dihydro-benzo[b]furanyl (2-(2,3-dihydro-benzo[b]furanyl), 3-(2,3-dihydro-benzo[b]furanyl), dihydro-benzo[b]furanyl), 5-(2,3-dihydro-benzo[b]furanyl), 6-(2,3-dihydro-benzo[b]furanyl), 7-(2,3-dihydro-benzo[b]furanyl), benzo[b]thiophenyl (2-benzo[b]thiophenyl, 3-benzo[b]thiophenyl, 4-benzo[b]thiophenyl, 5-benzo[b]thiophenyl, 6-benzo[b]thiophenyl, 7-benzo[b]thiophenyl), 2,3-dihydro-benzo[b]thiophenyl, (2-(2,3-dihydro-benzo[b]thiophenyl), 3-(2,3-dihydro-benzo[b]thiophenyl), 4-(2,3-dihydro-benzo[b]thiophenyl), 5-(2,3-dihydro-benzo[b]thiophenyl), 6-(2,3-dihydro-benzo[b]thiophenyl), 7-(2,3-dihydro-benzo[b]thiophenyl), indolyl (1-indolyl, 2-indolyl, 3-indolyl, 4-indolyl, 5-indolyl, 6-indolyl, 7-indolyl), indazole (1-indazolyl, 3-indazolyl, 4-indazolyl, 5-indazolyl, 6-indazolyl, 7-indazolyl), benzimidazolyl (1-benzimidazolyl, 2-benzimidazolyl, 4-benzimidazolyl, 5-benzimidazolyl, 6-benzimidazolyl, 7-benzimidazolyl, 8-benzimidazolyl), benzoxazolyl (1-benzoxazolyl, 2-benzoxazolyl), benzothiazolyl (1-benzothiazolyl, 2-benzothiazolyl, 4-benzothiazolyl; 5-benzothiazolyl, 6-benzothiazolyl, 7-benzothiazolyl), benzo[d]isoxazolyl, carbazolyl (1-carbazolyl, 2-carbazolyl, 3-carbazolyl, 4-carbazolyl), 5H-dibenz[b,f]azepine (5H-dibenz[b,f]azepin-1-yl, 5H-dibenz[b,f]azepine-2-yl, 5H-dibenz[b,f]azepine-3-yl, 5H-dibenz[b,f]azepine-4-yl, 5H-dibenz[b,f]azepine-5-yl), 10,11-dihydro-5H-dibenz[b,f]azepine (10,11-dihydro-5H-dibenz[b,f]azepine-1-yl, 10,11-dihydro-5H-dibenz[b,f]azepine-2-yl, 10,11-dihydro-5H-dibenz[b,f]azepine-3-yl, 10,11-dihydro-5H-dibenz[b,f]azepine-4-yl, 10,11-dihydro-5H-dibenz[b,f]azepine-5-yl), and the like.

Heterocyclylalkyl groups are alkyl, alkenyl or alkynyl groups as defined above in which a hydrogen or carbon bond of an alkyl, alkenyl or alkynyl group is replaced with a bond to a heterocyclyl group as defined above. Representative heterocyclyl alkyl groups include, but are not limited to, furan-2-yl methyl, furan-3-yl methyl, pyridine-2-yl methyl (α-picolyl), pyridine-3-yl methyl (β-picolyl), pyridine-4-yl methyl (γ-picolyl), tetrahydrofuran-2-yl ethyl, and indol-2-yl propyl. Heterocyclylalkyl groups can be substituted on the heterocyclyl moiety, the alkyl, alkenyl or alkynyl moiety, or both.

Heteroarylalkyl groups are alkyl, alkenyl or alkynyl groups as defined above in which a hydrogen or carbon bond of an alkyl, alkenyl or alkynyl group is replaced with a bond to a heteroaryl group as defined above. Heteroarylalkyl groups can be substituted on the heteroaryl moiety, the alkyl, alkenyl or alkynyl moiety, or both.

By a “ring system” as the term is used herein is meant a moiety comprising one, two, three or more rings, which can be substituted with non-ring groups or with other ring systems, or both, which can be fully saturated, partially unsaturated, fully unsaturated, or aromatic, and when the ring system includes more than a single ring, the rings can be fused, bridging, or spirocyclic. By “spirocyclic” is meant the class of structures wherein two rings are fused at a single tetrahedral carbon atom, as is well known in the art.

A “monocyclic, bicyclic or polycyclic, aromatic or partially aromatic ring” as the term is used herein refers to a ring system including an unsaturated ring possessing 4n+2 pi electrons, or a partially reduced (hydrogenated) form thereof. The aromatic or partially aromatic ring can include additional fused, bridged, or Spiro rings that are not themselves aromatic or partially aromatic. For example, naphthalene and tetrahydronaphthalene are both a “monocyclic, bicyclic or polycyclic, aromatic or partially aromatic ring” within the meaning herein. Also, for example, a benzo-[2.2.2]-bicyclooctane is also a “monocyclic, bicyclic or polycyclic, aromatic or partially aromatic ring” within the meaning herein, containing a phenyl ring fused to a bridged bicyclic system. A fully saturated ring has no double bonds therein, and is carbocyclic or heterocyclic depending on the presence of heteroatoms within the meaning herein.

When two “R” groups are said to be joined together or taken together to form a ring, it is meant that together with the carbon atom or a non-carbon atom (e.g., nitrogen atom), to which they are bonded, they may form a ring system. In general, they are bonded to one another to form a 3- to 7-membered ring, or a 5- to 7-membered ring. Non-limiting specific examples are the cyclopentyl, cyclohexyl, cycloheptyl, piperidinyl, piperazinyl, pyrolidinyl, pyrrolyl, pyridinyl.

The term “alkoxy” refers to an oxygen atom connected to an alkyl group, including a cycloalkyl group, as are defined above. Examples of linear alkoxy groups include but are not limited to methoxy, ethoxy, n-propoxy, n-butoxy, n-pentyloxy, n-hexyloxy, n-heptyloxy, n-octyloxy n-nonyloxy, and the like. Examples of branched alkoxy include but are not limited to isopropoxy, sec-butoxy, tert-butoxy, isopentyloxy, isohexyloxy, and the like. Examples of cyclic alkoxy include but are not limited to cyclopropyloxy, cyclobutyloxy, cyclopentyloxy, cyclohexyloxy, and the like.

The terms “aryloxy” and “arylalkoxy” refer to, respectively, an aryl group bonded to an oxygen atom and an aralkyl group bonded to the oxygen atom at the alkyl moiety. Examples include but are not limited to phenoxy, naphthyloxy, and benzyloxy.

An “acyl” group as the term is used herein refers to a group containing a carbonyl moiety wherein the group is bonded via the carbonyl carbon atom. The carbonyl carbon atom is also bonded to another carbon atom, which can be part of an alkyl, aryl, aralkyl cycloalkyl, cycloalkylalkyl, heterocyclyl, heterocyclylalkyl, heteroaryl, heteroarylalkyl group or the like. In the special case wherein the carbonyl carbon atom is bonded to a hydrogen, the group is a “formyl” group, an acyl group as the term is defined herein. An acyl group can include 0 to about 12-20 additional carbon atoms bonded to the carbonyl group. An acyl group can include double or triple bonds within the meaning herein. An acryloyl group is an example of an acyl group. An acyl group can also include heteroatoms within the meaning here. A nicotinoyl group (pyridyl-3-carbonyl) group is an example of an acyl group within the meaning herein. Other examples include acetyl, benzoyl, phenylacetyl, pyridylacetyl, cinnamoyl, and acryloyl groups and the like. When the group containing the carbon atom that is bonded to the carbonyl carbon atom contains a halogen, the group is termed a “haloacyl” group. An example is a trifluoroacetyl group.

The term “amine” includes primary, secondary, and tertiary amines having, e.g., the formula N(group)₃ wherein each group can independently be H or non-H, such as alkyl, aryl, and the like. Amines include but are not limited to R—NH₂, for example, alkylamines, arylamines, alkylarylamines; R₂NH wherein each R is independently selected, such as dialkylamines, diarylamines, aralkylamines, heterocyclylamines and the like; and R₃N wherein each R is independently selected, such as trialkylamines, dialkylarylamines, alkyldiarylamines, triarylamines, and the like. The term “amine” also includes ammonium ions as used herein.

An “amino” group is a substituent of the form —NH₂, —NHR, —NR₂, —NR₃ ⁺, wherein each R is independently selected, and protonated forms of each. Accordingly, any compound substituted with an amino group can be viewed as an amine.

An “ammonium” ion includes the unsubstituted ammonium ion NH₄ ⁺, but unless otherwise specified, it also includes any protonated or quaternarized forms of amines. Thus, trimethylammonium hydrochloride and tetramethylammonium chloride are both ammonium ions, and amines, within the meaning herein.

The term “amide” (or “amido”) includes C- and N-amide groups, i.e., —C(O)NR₂, and —NRC(O)R groups, respectively. Amide groups therefore include but are not limited to carbamoyl groups (—C(O)NH₂) and formamide groups (—NHC(O)H). A “carboxamido” group is a group of the formula C(O)NR₂, wherein R can be H, alkyl, aryl, etc.

The term “carbonyl,” refers to a —C(O)— group.

“Halo,” “halogen,” and “halide” include fluorine, chlorine, bromine and iodine.

The term “perhaloalkyl” refers to an alkyl group where all of the hydrogen atoms are replaced by halogen atoms. Perhaloalkyl groups include, but are not limited to, —CF₃ and —C(CF₃)₃. The term “haloalkyl” refers to an alkyl group where some but not necessarily all of the hydrogen atoms are replaced by halogen atoms. Haloalkyl groups include but are not limited to —CHF₂ and —CH₂F.

The term “perhaloalkoxy” refers to an alkoxy group where all of the hydrogen atoms are replaced by halogen atoms. Perhaloalkoxy groups include, but are not limited to, —OCF₃and —OC(CF₃)₃. The term “haloalkoxy” refers to an alkoxy group where some but not necessarily all of the hydrogen atoms are replaced by halogen atoms. Haloalkoxy groups include but are not limited to —OCHF₂ and —OCH₂F.

The terms “comprising,” “including,” “having,” “composed of,” are open-ended terms as used herein, and do not preclude the existence of additional elements or components. In a claim element, use of the forms “comprising,” “including,” “having,” or “composed of” means that whatever element is comprised, had, included, or composes is not necessarily the only element encompassed by the subject of the clause that contains that word.

A “salt” as is well known in the art includes an organic compound such as a carboxylic acid, a sulfonic acid, or an amine, in ionic form, in combination with a counterion. For example, acids in their anionic form can form salts with cations such as metal cations, for example sodium, potassium, and the like; with ammonium salts such as NH₄ ⁺ or the cations of various amines, including tetraalkyl ammonium salts such as tetramethylammonium, or other cations such as trimethylsulfonium, and the like. A “pharmaceutically acceptable” or “pharmacologically acceptable” salt is a salt formed from an ion that has been approved for human consumption and is generally non-toxic, such as a chloride salt or a sodium salt. A “zwitterion” is an internal salt such as can be formed in a molecule that has at least two ionizable groups, one forming an anion and the other a cation, which serve to balance each other. For example, amino acids such as glycine can exist in a zwitterionic form. A “zwitterion” is a salt within the meaning herein. The compounds of the present invention may take the form of salts. The term “salts” embraces addition salts of free acids or free bases which are compounds of the invention. Salts can be “pharmaceutically-acceptable salts.” The term “pharmaceutically-acceptable salt” refers to salts which possess toxicity profiles within a range that affords utility in pharmaceutical applications. Pharmaceutically unacceptable salts may nonetheless possess properties such as high crystallinity, which have utility in the practice of the present invention, such as for example utility in process of synthesis, purification or formulation of compounds of the invention.

Suitable pharmaceutically-acceptable acid addition salts may be prepared from an inorganic acid or from an organic acid. Examples of inorganic acids include hydrochloric, hydrobromic, hydriodic, nitric, carbonic, sulfuric, and phosphoric acids. Appropriate organic acids may be selected from aliphatic, cycloaliphatic, aromatic, araliphatic, heterocyclic, carboxylic and sulfonic classes of organic acids, examples of which include formic acetic, propionic, succinic, glycolic, gluconic, lactic, malic, tartaric, citric, ascorbic, glucuronic, maleic, fumaric, pynivic, aspartic, glutamic, benzoic, anthranilic, 4-hydroxybenzoic, phenylacetic, mandelic, embonic (pamoic), methanesulfonic, ethanesulfonic, benzenesulfonic, panthothenic, trifluoromethanesulfonic, 2-hydroxyethanesulfonic, p-toluenesulfonic, sulfanilic, cyclohexylaminosulfonic, stearic, alginic, β-hydroxybutyric, salicylic, galactaric and galacturonic acid. Examples of pharmaceutically unacceptable acid addition salts include, for example, perchlorates and tetrafluoroborates.

Suitable pharmaceutically acceptable base addition salts of compounds of the invention include, for example, metallic salts including alkali metal, alkaline earth metal and transition metal salts such as, for example, calcium, magnesium, potassium, sodium and zinc salts. Pharmaceutically acceptable base addition salts also include organic salts made from basic amines such as, for example, N,N′-dibenzylethylenediamine, chloroprocaine, choline, diethanolamine, ethylenediamine, meglumine (N-methylglucamine) and procaine. Examples of pharmaceutically unacceptable base addition salts include lithium salts and cyanate salts. Although pharmaceutically unacceptable salts are not generally useful as medicaments, such salts may be useful, for example as intermediates in the synthesis of Formula I compounds, for example in their purification by recrystallization. All of these salts may be prepared by conventional means from the corresponding compound according to Formula I by reacting, for example, the appropriate acid or base with the compound according to Formula I. The term “pharmaceutically acceptable salts” refers to nontoxic inorganic or organic acid and/or base addition salts, see, for example, Lit et al., Salt Selection for Basic Drugs (1986), Int J. Pharm., 33, 201-217, incorporated by reference herein.

A “hydrate” is a compound that exists in a composition with water molecules. The composition can include water in stoichiometric quantities, such as a monohydrate or a dihydrate, or can include water in random amounts. As the term is used herein a “hydrate” refers to a solid form, i.e., a compound in water solution, while it may be hydrated, is not a hydrate as the term is used herein.

A “solvate” is a similar composition except that a solvent other that water replaces the water. For example, methanol or ethanol can form an “alcoholate”, which can again be stoichiometric or non-stoichiometric. As the term is used herein a “solvate” refers to a solid form, i.e., a compound in solution in a solvent, while it may be solvated, is not a solvate as the term is used herein.

A “prodrug” as is well known in the art is a substance that can be administered to a patient where the substance is converted in vivo by the action of biochemicals within the patient's body, such as enzymes, to the active pharmaceutical ingredient. Examples of prodrugs include esters of carboxylic acid groups, which can be hydrolyzed by endogenous esterases as are found in the bloodstream of humans and other mammals.

“Isotopes” are well known in the art and refer to atoms with the same number of protons but different number of neutrons. For example, carbon 12, the most common form of carbon, has six protons and six neutrons, whereas carbon 14 has six protons and eight neutrons.

In addition, where features or aspects of the invention are described in terms of Markush groups, those skilled in the art will recognize that the invention is also thereby described in terms of any individual member or subgroup of members of the Markush group. For example, if X is described as selected from the group consisting of bromine, chlorine, and iodine, claims for X being bromine and claims for X being bromine and chlorine are fully described. Moreover, where features or aspects of the invention are described in terms of Markush groups, those skilled in the art will recognize that the invention is also thereby described in terms of any combination of individual members or subgroups of members of Markush groups. Thus, for example, if X is described as selected from the group consisting of bromine, chlorine, and iodine, and Y is described as selected from the group consisting of methyl, ethyl, and propyl, claims for X being bromine and Y being methyl are fully described.

The GLP-1 compounds, their pharmaceutically acceptable salts or hydrolyzable esters of the present invention may be combined with a pharmaceutically acceptable carrier to provide pharmaceutical compositions useful for treating the biological conditions or disorders noted herein in mammalian species, and more preferably, in humans. The particular carrier employed in these pharmaceutical compositions may vary depending upon the type of administration desired (e.g., intravenous, oral, topical, suppository, or parenteral).

In preparing the compositions in oral liquid dosage forms (e.g., suspensions, elixirs and solutions), typical pharmaceutical media, such as water, glycols, oils, alcohols, flavoring agents, preservatives, coloring agents and the like can be employed. Similarly, when preparing oral solid dosage forms (e.g., powders, tablets and capsules), carriers such as starches, sugars, diluents, granulating agents, lubricants, binders, disintegrating agents and the like can be employed.

Another aspect of an embodiment of the invention provides compositions of the compounds of the invention, alone or in combination with another GLP-1 agonist or another type of therapeutic agent or second medicament, or both. Non-limiting examples of the GLP-1 receptor agonists include exenatide, liraglutide, taspoglutide, albiglutide, lixisenatide, and mixtures thereof.

In one embodiment, the GLP-1 agonist is exenatide (Byetta®) or Byetta LAR®. Exenatide is described, for example, in U.S. Pat. Nos. 5,424,286; 6,902,744; 7,297,761, and others, the contents of each of which is herein incorporated by reference in its entirety.

In one embodiment, the GLP-1 agonist is liraglutide (VICTOZA®) (also called NN-2211 and [Arg34, Lys26]-(N-epsilon-(gamma-Glu(N-alpha-hexadecanoyl))-GLP-1 (7-37)), includes the sequence HAEGTFTSDVSSYLEGQAAKEFIAWKVRGRG (SEQ ID NO: 1) and is available from Novo Nordisk (Denmark) or Scios (Fremont, Calif. USA). See, e.g., Elbrond et al., 2002, Diabetes Care. August; 25(8):1398404; Agerso et al., 2002, Diabetologia. February; 45(2):195-202).

In one embodiment, the GLP-1 agonist is taspoglutide (CAS Registry No. 275371-94-3) and is available from Hoffman La-Roche. See, for example, U.S. Pat. No. 7,368,427, the contents of which are herein incorporated by reference in its entirety.

In one embodiment, the GLP-1 agonist albiglutide (SYNCRIA®, from GlaxoSmithKline).

In another embodiment, the GLP-1 agonist is lixisenatide (Lyxumia® from Sanofi-Aventis/Zealand Pharma).

Non-limiting examples of the second medicaments are as disclosed above. In various such embodiments, the second medicament is exenatide, liraglutide, taspoglutide, albiglutide, or lixisenatide or other insulin regulating peptide. In various such embodiments, the second medicament is a DPPIV inhibitor. In various such embodiments, the second medicament is medically indicated for the treatment of type II diabetes. In various such embodiments, the second medicament is a biguanide, a sulfonylurea, a meglitinide, a thiazolidinedione, an α-glucosidase inhibitor, a bile acid sequestrant, an SGLT-2 inhibitor, and/or a dopamine-2 agonist.

In another embodiment, the second medicament is metformin.

In another embodiment, the second medicament is sitagliptin.

As set forth herein, compounds of the invention include stereoisomers, tautomers, solvates, hydrates, salts including pharmaceutically acceptable salts, and mixtures thereof. Compositions containing a compound of the invention can be prepared by conventional techniques, e.g., as described in Remington: The Science and Practice of Pharmacy, 19th Ed., 1995, incorporated by reference herein. The compositions can appear in conventional forms, for example capsules, tablets, aerosols, solutions, suspensions or topical applications.

Typical compositions include a compound of the invention and a pharmaceutically acceptable excipient which can be a carrier or a diluent. For example, the active compound will usually be mixed with a carrier, or diluted by a carrier, or enclosed within a carrier which can be in the form of an ampoule, capsule, sachet, paper, or other container. When the active compound is mixed with a carrier, or when the carrier serves as a diluent, it can be solid, semi-solid, or liquid material that acts as a vehicle, excipient, or medium for the active compound. The active compound can be adsorbed on a granular solid carrier, for example contained in a sachet. Some examples of suitable carriers are water, salt solutions, alcohols, polyethylene glycols, polyhydroxyethoxylated castor oil, peanut oil, olive oil, gelatin, lactose, terra alba, sucrose, dextrin, magnesium carbonate, sugar, cyclodextrin, amylose, magnesium stearate, talc, gelatin, agar, pectin, acacia, stearic acid or lower alkyl ethers of cellulose, silicic acid, fatty acids, fatty acid amines, fatty acid monoglycerides and diglycerides, pentaerythritol fatty acid esters, polyoxyethylene, hydroxymethylcellulose and polyvinylpyrrolidone. Similarly, the carrier or diluent can include any sustained release material known in the art, such as glyceryl monostearate or glyceryl distearate, alone or mixed with a wax.

The formulations can be mixed with auxiliary agents which do not deleteriously react with the active compounds. Such additives can include wetting agents, emulsifying and suspending agents, salt for influencing osmotic pressure, buffers and/or coloring substances preserving agents, sweetening agents or flavoring agents. The compositions can also be sterilized if desired.

The route of administration can be any route which effectively transports the active compound of the invention to the appropriate or desired site of action, such as oral, nasal, pulmonary, buccal, subdermal, intradermal, transdermal or parenteral, e.g., rectal, depot, subcutaneous, intravenous, intraurethral, intramuscular, intranasal, ophthalmic solution or an ointment, the oral route being preferred.

For parenteral administration, the carrier will typically comprise sterile water, although other ingredients that aid solubility or serve as preservatives can also be included. Furthermore, injectable suspensions can also be prepared, in which case appropriate liquid carriers, suspending agents and the like can be employed.

For topical administration, the compounds of the present invention can be formulated using bland, moisturizing bases such as ointments or creams.

If a solid carrier is used for oral administration, the preparation can be tabletted, placed in a hard gelatin capsule in powder or pellet form or it can be in the form of a troche or lozenge. If a liquid carrier is used, the preparation can be in the form of a syrup, emulsion, soft gelatin capsule or sterile injectable liquid such as an aqueous or non-aqueous liquid suspension or solution.

Injectable dosage forms generally include aqueous suspensions or oil suspensions which can be prepared using a suitable dispersant or wetting agent and a suspending agent Injectable forms can be in solution phase or in the form of a suspension, which is prepared with a solvent or diluent. Acceptable solvents or vehicles include sterilized water, Ringer's solution, or an isotonic aqueous saline solution. Alternatively, sterile oils can be employed as solvents or suspending agents. Preferably, the oil or fatty acid is non-volatile, including natural or synthetic oils, fatty acids, mono-, di- or tri-glycerides.

For injection, the formulation can also be a powder suitable for reconstitution with an appropriate solution as described above. Examples of these include, but are not limited to, freeze dried, rotary dried or spray dried powders, amorphous powders, granules, precipitates, or particulates. For injection, the formulations can optionally contain stabilizers, pH modifiers, surfactants, bioavailability modifiers and combinations of these. The compounds can be formulated for parenteral administration by injection such as by bolus injection or continuous infusion. A unit dosage form for injection can be in ampoules or in multi-dose containers.

The formulations of the invention can be designed to provide quick, sustained, or delayed release of the active ingredient after administration to the patient by employing procedures well known in the art. Thus, the formulations can also be formulated for controlled release or for slow release.

Compositions contemplated by the present invention can include, for example, micelles or liposomes, or some other encapsulated form, or can be administered in an extended release form to provide a prolonged storage and/or delivery effect. Therefore, the formulations can be compressed into pellets or cylinders and implanted intramuscularly or subcutaneously as depot injections. Such implants can employ known inert materials such as silicones and biodegradable polymers, e.g., polylactide-polyglycolide. Examples of other biodegradable polymers include poly(orthoesters) and poly(anhydrides).

For nasal administration, the preparation can contain a compound of the invention, dissolved or suspended in a liquid carrier, preferably an aqueous carrier, for aerosol application. The carrier can contain additives such as solubilizing agents, e.g., propylene glycol, surfactants, absorption enhancers such as lecithin (phosphatidylcholine) or cyclodextrin, or preservatives such as parabens.

For parenteral application, particularly suitable are injectable solutions or suspensions, preferably aqueous solutions with the active compound dissolved in polyhydroxylated castor oil.

Dosage forms can be administered daily, or more than once a day, such as twice or thrice daily. Alternatively dosage forms can be administered less frequently than daily, such as every other day, or weekly, if found to be advisable by a prescribing physician. Dosing regimens include, for example, dose titration to the extent necessary or useful for the indication to be treated, thus allowing the patient's body to adapt to the treatment and/or to minim/ze or avoid unwanted side effects associated with the treatment. Other dosage forms include delayed or controlled-release forms. Suitable dosage regimens and/or forms include those set out, for example, in the latest edition of the Physicians' Desk Reference, incorporated herein by reference.

An embodiment of the invention also encompasses prodrugs of a compound of the invention which on administration undergo chemical conversion by metabolic or other physiological processes before becoming active pharmacological substances. Conversion by metabolic or other physiological processes includes without limitation enzymatic (e.g., specific enzymatically catalyzed) and non-enzymatic (e.g., general or specific acid or base induced) chemical transformation of the prodrug into the active pharmacological substance. In general, such prodrugs will be functional derivatives of a compound of the invention which are readily convertible in vivo into a compound of the invention. Conventional procedures for the selection and preparation of suitable prodrug derivatives are described, for example, in Design of Prodrugs, ed. H. Bundgaard, Elsevier, 1985.

In another embodiment, there are provided methods of making a composition of a compound described herein including formulating a compound of the invention with a pharmaceutically acceptable carrier or diluent. In some embodiments, the pharmaceutically acceptable carrier or diluent is suitable for oral administration. In some such embodiments, the methods can further include the step of formulating the composition into a tablet or capsule. In other embodiments, the pharmaceutically acceptable carrier or diluent is suitable for parenteral administration. In some such embodiments, the methods further include the step of lyophilizing the composition to form a lyophilized preparation.

The compounds of the invention can be used therapeutically in combination with i) one or more other GLP-1 modulators and/or ii) one or more other types of therapeutic agents or second medicaments which can be administered orally in the same dosage form, in a separate oral dosage form (e.g., sequentially or non-sequentially) or by injection together or separately (e.g., sequentially or non-sequentially). Examples of combination therapeutic agents include Metformin, Sitagliptin (MK-0431, Jantivia) an oral antihyperglycemic (antidiabetic drug) of the dipeptidyl peptidase-4 (DPP-4) inhibitor class and Exenatide (Byetta) an incretin mimetic. In other embodiments, the second medicament is a biguanide such as metformin, a sulfonylurea such as glibenclamide, glipizide, gliclazide, and glimepiride, a meglitinide such as repaglinide and nateglinide, a thiazolidinedione such as pioglitazone and rosiglitazone, an α-glucosidase inhibitor such as acarbose and miglitol, a bile acid sequestrant such as colesevelam, and/or a dopamine-2 agonist such as bromocriptine.

Combinations of the invention include mixtures of compounds from i) and ii) in a single formulation and compounds from i) and ii) as separate formulations. Some combinations of the invention can be packaged as separate formulations in a kit. In some embodiments, two or more compounds from ii) are formulated together while a compound of the invention is formulated separately.

The dosages and formulations for the other agents to be employed, where applicable, will be as set out in the latest edition of the Physicians' Desk Reference, incorporated herein by reference.

In certain embodiments, the present invention encompasses compounds that bind with high affinity and specificity to the GLP-1 receptor in an agonist manner or as an activator or a potentiator. In certain embodiments a compound of the invention acts as a positive allosteric modulator of GLP-1 receptor.

In certain embodiments, the present invention provides a method for activating, potentiating, or agonizing (i.e., to have an agonic effect, to act as an agonist) a GLP-1 receptor, with a compound of the invention. The method involves contacting the receptor with a suitable concentration of an inventive compound to bring about activation of the receptor. The contacting can take place in vitro, for example in carrying out an assay to determine the GLP-1 receptor activation activity of an inventive compound undergoing experimentation related to a submission for regulatory approval.

In certain embodiments, the method for activating a GLP-1 receptor, can also be carried out in vivo, that is, within the living body of a mammal, such as a human patient or a test animal. The inventive compound can be supplied to the living organism via one of the routes as described above, e.g., orally, or can be provided locally within the body tissues. In the presence of the inventive compound, activation of the receptor takes place, and the effect thereof can be studied.

An embodiment of the present invention provides a method of treatment of a malcondition in a patient for which activation of an GLP-1 receptor is medically indicated, wherein the patient is administered the inventive compound in a dosage, at a frequency, and for a duration to produce a beneficial effect on the patient. The inventive compound can be administered by any suitable means, examples of which are described above.

In certain embodiments, the present invention is directed to compounds adapted to act as modulators or potentiators of Class B GPCRs. These compounds may have activity on their own or in the presence of receptor ligands. Receptors include incretin peptides including GLP-1(7-36) and GLP-1(9-36).

Methods of treatments provided by the invention include administration of a compound of the invention, alone or in combination with another pharmacologically active agent or second medicament to a subject or patient having a malcondition for which activation, potentiation or agonism of a glucagon-like peptide 1 receptor is medically indicated such as type I diabetes, type II diabetes, gestational diabetes, obesity, excessive appetite, insufficient satiety, or metabolic disorder.

In another embodiment, methods of treatment provided by the invention include administration of a compound of the invention for the treatment of non-alcoholic fatty liver disease (NAFLD) and/or non-alcoholic steatohepatitis (NASH). NAFLD is believed to be caused by the disruption of hepatic lipid homeostasis and, at least in a portion of patients, can progress to NASH. NAFLD is associated with insulin resistance in type 2 diabetes mellitus, and GLP1 increases insulin sensitivity and aids glucose metabolism. The compounds of this invention are beneficial in this context by serving to increase fatty acid oxidation, decrease lipogenesis, and/or improve hepatic glucose metabolism (see e.g., Lee et. al., Diabetes Metab. J. 36:262-267, 2012; Trevaskis et al. Am. J. Physiol. Gastrointest. Liver Physiol. 302:G762-G772, 2012; Kim et al. Korean J. Physiol. Pharmacol. 18:333-339, 2014; and see: Armstrong et. al., Journal of Hepatology 62:S187-S212, 2015 for results with Liraglutide in Phase II trials).

General Synthetic Methods for Preparing Compounds

Molecular embodiments of the present invention can be synthesized using standard synthetic techniques known to those of skill in the art. Compounds of the present invention can be synthesized using the general synthetic procedures set forth in Schemes 1-53.

The other enantiomer can be prepared in a similar manner using Scheme 1.

The other enantiomer can be prepared in a similar manner using Scheme 3.

The other enantiomer can be prepared in a similar manner using Scheme 4.

The other enantiomer can be prepared in a similar manner using Scheme 5.

The other enantiomer can be prepared in a similar manner using Scheme 6.

The other enantiomer can be prepared in a similar manner using Scheme 7.

The other enantiomer can be prepared in a similar manner using Scheme 8.

The other enantiomer can be prepared in a similar manner using Scheme 9.

The other enantiomer can be prepared in a similar manner using Scheme M.

The other enantiomer can be prepared in a similar manner using Scheme 11.

The other enantiomer can be prepared in a similar manner using Scheme 12.

The other enantiomer can be prepared in a similar manner using Scheme 13.

The other enantiomer can be prepared in a similar manner using Scheme 14.

The other enantiomer can be prepared in a similar manner using Scheme 17.

The other enantiomer can be prepared in a similar manner using Scheme 18.

The other enantiomer can be prepared in a similar manner using Scheme 19.

-   -   Reagents: PG is a protecting group; (i) (a) where R₂ is         NH—(CR_(a)R_(b))_(m)—COOH: NH₂—(CR_(a)R_(b))_(m)—COOPG, HATU,         DMF then deprotection e.g., tert-butyl ester deprotection: DCM,         TFA; (b) where R₂ is NH—SO₂—R₈: R₈SO₇NH₇, DCC, DMAP, DCM (c)         where R₂ is NR₄₁R₄₂: HNR₄₁R₄₂. HATU DMF then deprotection e.g.,         tert-butyl ester deprotection: DCM, TFA; (d) where R₂ is         N(R₁)—(CR_(a)R_(b))m-CO—N(R₁)-heterocyclyl:         HN(R₁)—(CR_(a)R_(b))m-CO—N(R₁)-heterocyclyl, HATU, DMF then         deprotection e.g., tert-butyl ester deprotection: DCM, TFA; (e)         where R₂ is —N(R₁)—(CR_(a)R_(b))_(m)—CO—N(R₁)(R₇):         NH₂—(CR_(a)R_(b))_(m)—COOPG, HATU, DMF then deprotection e.g.,         tert-butyl ester deprotection: DCM, TFA then HN(R₁)(R₇), HATU,         DMAP, DCM (f) where R₂ is N(R₁)—(CR_(a)R_(b))_(m)-heterocyclyl:         HN(R₁)—(CR_(a)R_(b))_(m)-heterocyclyl, HATU, DMF then         deprotection e.g., tert-butyl ester deprotection: DCM, TFA.

The other enantiomer and diastereoisomer can be prepared in a similar manner using Scheme 20.

The other enantiomer can be prepared in a similar manner using Scheme 21.

The other enantiomer can be prepared in a similar manner using Scheme 22.

The other enantiomer can be prepared in a similar manner using Scheme 23.

The other enantiomer can be prepared in a similar manner using Scheme 24.

The other enantiomer can be prepared in a similar manner using Scheme 25.

The other enantiomer can be prepared in a similar manner using Scheme 26.

The other enantiomer and diastereomers can be prepared in a similar manner using

The other enantiomer can be prepared in a similar manner using Scheme 28.

The other enantiomer can be prepared in a similar manner using Scheme 29.

The other enantiomer can be prepared in a similar manner using Scheme 30.

The other enantiomer can be prepared in a similar manner using Scheme 31.

The other enantiomer can be prepared in a similar manner using Scheme 32.

The other enantiomer can be prepared in a similar manner using Scheme 33.

The other enantiomer can be prepared in a similar manner using Scheme 34.

The other enantiomer and diastereomers can be prepared in a similar manner using Scheme 35.

The other enantiomer and diastereoisomers can be prepared in a similar manner using Scheme 36.

The other enantiomer and diastereoisomers can be prepared in a similar manner using Scheme 37.

The other enantiomer can be prepared in a similar manner using Scheme 38.

The other enantiomer and diastereoisomers can be prepared in a similar manner using Scheme 39.

The other enantiomer can be prepared in a similar manner using Scheme 40.

The other enantiomer can be prepared in a similar manner using Scheme 41.

The other enantiomer can be prepared in a similar manner using Scheme 42.

The other enantiomer can be prepared in a similar manner using Scheme 43.

The other enantiomer can be prepared in a similar manner using Scheme 43.

-   -   Reagents: R₇ is represented as a ring containing an alkene; PG₁         is a protecting group and X_(A) and X_(B) are CR₄ or N; (i)         Reduction of alkene: e.g. Pd/C, H₂, THF; (ii) Deprotection of         PG₁, e.g. tert-butyl ester deprotection: DCM, TFA.

The other enantiomer can be prepared in a similar manner using Scheme 45.

The other enantiomer and diastereoisomer can be prepared in a similar manner using Scheme 46.

The other enantiomer can be prepared in a similar manner using Scheme 47.

The other enantiomer can be prepared in a similar manner using Scheme 48.

-   -   Reagents: X_(A) and X_(B) are CR₄ or N; (i) Pd₂(dba)₃,         2,2′-bis(diphenylphosphino)-1,1′-binaphthalene, NaOtBu,         toluene; (ii) HCl, THF; (iii) phosphoryl trichloride.

The other enantiomer can be prepared in a similar manner using Scheme 50.

The other enantiomer can be prepared in a similar manner using Scheme 51.

The other enantiomer can be prepared in a similar manner using Scheme 52.

The other enantiomer can be prepared in a similar manner using Scheme 53.

EXAMPLES

The invention is further illustrated by the following examples. The examples below are non-limiting are merely representative of various aspects of the invention.

General Methods

NMR Spectra

¹H NMR (400 MHz) and ¹C NMR (100 MHz) were obtained in solution of deuteriochloroform (CDCl₃) or dimethyl sulfoxide (d₆-DMSO). NMR spectra were processed using MestReNova 6.0.3-5604.

LCMS Data

Mass spectra (LCMS) were obtained using one of 6 systems. System 1a: Agilent 1100/6110 HPLC system equipped with a Thompson ODS-A, 100 A, 5μ (50×4.6 mm) column using water with 0.1% formic acid as the mobile phase A, acetonitrile with 0.1% formic acid as the mobile phase B, water with 5 mM ammonium acetate as the mobile phase C, and acetonitrile with 5 mM ammonium acetate as the mobile phase D with a flow rate of 1 mL/min. Method 1: 20-100% mobile phase B (80-0% A) over 2.5 mM then held at 100% B for 2.5 min. Method 2: 5% mobile phase B (95% A) for 1 min, 5-95% B over 9 mM, then held at 95% B for 5 min. Method 3: 20-100% mobile phase B (80-0% A) over 2.5 min then held at 100% B for 4.5 min. Method 12: 5% D (95% C) for 1 min. then 5-95% D over 9 min. and held at 95% D for 5 min. System 1b: Agilent 1100/6110 HPLC system equipped with a Agilent Poroshell 120 EC-C8, 2.7μ (50×3 mm) column using water with 5 mM ammonium acetate as the mobile phase C, and acetonitrile with 5 mM ammonium acetate as the mobile phase D with a flow rate of 1 mL/min. Method 13: 5% D (95% C) to 95% D over 12 mM. then held at 95% D for 2.8 min. and to 5% D over 0.2 min. System 1c: Agilent 1100/6110 HPLC system equipped with a Agilent Poroshell 120 EC-C18, 2.7μ (50×3 mm) column using water with 5 mM ammonium acetate as the mobile phase C, and acetonitrile with 5 mM ammonium acetate as the mobile phase D with a flow rate of 1 mL/min. Method 14: 5% D (95% C) to 95% D over 12 min. then held at 95% D for 2.8 min. and then to 5% D over 0.2 min. Method 15: 20% D (80% C) to 95% D over 3 min. and hold at 95% D 1.8 min then to 20% D over 0.2 min. Method 16: 20% D (80% C) to 95% D over 3.0 min. and hold at 95% D for 3.8 mM. then 20% D over 0.2 min. System 14: Agilent 1100/6110 HPLC system equipped with a Agilent Poroshell 120 EC-C8, 2.7μ (50×3 mm) column using water with 5 mM ammonium acetate as the mobile phase C, and acetonitrile with 5 mM ammonium acetate as the mobile phase D with a flow rate of 1 mL/min. Method 18: 20% D (80% C) to 95% D over 3 min. and hold at 95% D 1.8 min then to 20% D over 0.2 min. Method 19: 20% D (80% C) to 95% D over 3.0 min. and hold at 95% D for 3.8 min. then 20% D over 0.2 min. Method 20: 5% D (95% C) to 95% D over 12 min then held at 95% D for 2.8 mM. and then to 5% D over 0.2 min. System 1e: Agilent 1100/6110 HPLC system equipped with a Waters X-Bridge C-8, 3.5μ (50×4.6 mm) column using water with 5 mM ammonium acetate as the mobile phase C, and acetonitrile with 5 mM ammonium acetate as the mobile phase D with a flow rate of 1 mL/min. Method 25: 20% D (80% C) to 95% D over 3 min. then held at 95% D for 3.8 min. and then to 5% D over 0.2 min. Method 26: 20% D (80% C) to 95% D over 3 min. and hold at 95% D 1.8 min then to 20% D over 0.2 min. Method 28: 20% D (80% C) to 95% D over 12.0 min. and hold at 95% D for 2.8 mM. then 20% D over 0.2 min. System 2: Agilent 1200 LCMS equipped with an Agilent Zotbax Extend RRHT 1.8 μm (4.6×30 mm) column using water with 0.1% formic acid as mobile phase A and acetonitrile with 0.1% formic acid as mobile phase B. Method 4: 5-95% mobile phase B over 3.0 min with a flow rate of 2.5 mL/min, then held at 95% for 0.5 min with a flow rate of 4.5 mL/min. Method 5: 5-95% mobile phase B over 14 mM with a flow rate of 2.5 mL/min, then held at 95% for 0.5 min with a flow rate of 4.5 mL/min. System 3: Waters Fractionlynx LCMS system equipped with an Agilent Zorbax Extend RRHT 1.8 μm, (4.6×30 mm) column using water with 0.1% formic acid as mobile phase A and acetonitrile with 0.1% formic acid as mobile phase B. Method 6: 5-95% mobile phase B over 3.0 min with a flow rate of 2.5 mL/min, then held at 95% for 0.5 min with a flow rate of 4.5 mL/min. Method 7: 5-95% mobile phase B over 14 mM with a flow rate of 2.5 mL/min, then held at 95% for 0.5 min with a flow rate of 4.5 mL/min. System 4: Agilent 1260 LCMS equipped with an Agilent Zorbax Extend RRHT 1.8 μm (4.6×30 mm) column using water with 0.1% formic acid as mobile phase A and acetonitrile with 0.1% formic acid as mobile phase B. Method 8: 5-95% mobile phase B over 3.0 min with a flow rate of 2.5 mL/min, then held at 95% for 0.5 mM with a flow rate of 4.5 mL/min. Method 9: 5-95% mobile phase B over 14 min with a flow rate of 2.5 mL/min, then held at 95% for 0.5 min with a flow rate of 4.5 mL/min. System 5: Agilent 1260 LCMS equipped with a Waters Xselect CSH C18 3.5 μm (4.6×50 mm) column using water with 0.1% formic acid as mobile phase A and acetonitrile with 0.1% formic acid as mobile phase B. Method 10: The gradient was 5-95% mobile phase B over 13.0 min with a flow rate of 2.5 mL/min, then held at 95% for 1.0 min with a flow rate of 4.5 mL/min. Method 11: The gradient was 5-95% mobile phase B over 3.0 min with a flow rate of 2.5 mL/min, then held at 95% for 0.6 min with a flow rate of 4.5 mL/min. System 6: Waters Acquity UPLC system equipped with a Acquity UPLC BEH C18, 1.7 μm (2.1×50 mm) or Phenomenex Kinetex C18, 1.7 μm (2.1×50 mm) column using water with 10 mM ammonium formate as mobile phase A, acetonitrile as mobile phase B with a flow rate of 0.5 mL/min. Method 17: 10% mobile phase B (90% A) for 0.5 min, 10-95% B over 3 min, then held at 95% B for 1.1 min, 95-10% B over 0.1 min then held for 0.3 min and the total run time is 5 min. Method 23: 20% mobile phase B (80% A) for 0.5 min, 20-95% B over 3 min, then held at 95% B for 1.1 min, 95-20% B over 0.1 mM, then held for 0.3 min and the total run time is 5 min. Method 24: 30% mobile phase B (70% A) for 0.5 min, 30-95% B over 2.2 min, then held at 95% B for 1.9 min, 95-30% B over 0.1 mM, then held for 0.3 min and the total run time is 5 min. Method 27: 40% mobile phase B (60% A) for 0.5 min, 40-95% B over 1.9 mM, then held at 95% B for 2.2 min, 95-40% B over 0.1 min, then held for 0.3 min and the total run time is 5 mM. Method 21: 20% mobile phase B (80% A) for 0.5 min, 20-95% B over 2.7 min, then held at 95% B for 1.4 min, 95-20% B over 0.1 min, then held for 0.3 min and the total run time is 5 min. Method 22: 40% mobile phase B (60% A) for 0.5 min, 40-95% B over 1.6 min, then held at 95% B for 2.5 min, 95-40% B over 0.1 min, then held for 0.3 min and the total run time is 5 min.

Hydrogenations

Hydrogenation reactions were performed using a Thales Nanotechnology H-Cube reactor equipped with the specified CatCart or using standard laboratory techniques.

Reaction Conditions and Abbreviations

Pyridine, dichloromethane (DCM), tetrahydrofiiran (THF), and toluene used in the procedures were from Aldrich Sure-Seal bottles or Acros AcroSeal dry solvent and kept under nitrogen (N₂). All reactions were stirred magnetically and temperatures are external reaction temperatures. The following abbreviations are used: ethyl acetate (EA), 1-methy-2-pyrrolidinone (NMP), triethylamine (TEA), N-hydroxybenzotriazole (HOBt), 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride (EDC), N,N-dimethylformamide (DMF), dimethyl acetamide (DMA), Di-tert-butyl dicarbonate (Boc₂O), N,N-Diisopropylethylamine (DIEA), acetic acid (AcOH), hydrochloric acid (HCl), O-(7-azabenzotriazol-1-yl-N,N,N′,N′-tetramethyluronium hexafluorophosphate (HATU), 4-dimethylaminopyridine (DMAP), tert-butanol (t-BuOH), sodium hydride (NaH), sodium triacetoxyborohydride (Na(OAc)₃BH), ethanol (EtOH), methanol (MeOH), acetonitrile (ACN).

Purifications

Chromatographies were carried out using a Combiflash Rf flash purification system (Teledyne Isco) equipped with Redisep (Teledyne Isco), Telos (Kinesis) or Grace Resolv (Grace Davison Discovery Sciences) silica gel (SiO₂) columns. Preparative HPLC purifications were performed using one or two systems. System 1: Varian ProStar/PrepStar system equipped with a Waters SunFire Prep C18 OBD, 5 μm (19×150 mm) column using water containing 0.05% trifluoroacetic acid as mobile phase A, and acetonitrile with 0.05% trifluoroacetic acid as mobile phase B. The gradient was 40-95% mobile phase B over 10 min, held at 95% for 5-10 min, and then return to 40% over 2 min with flow rate of 18 mL/min. Fractions were collected using a Varian Prostar fraction collector by UV detection at 254 nm and were evaporated using a Savant SpeedVac Plus vacuum pump or a Genevac EZ-2. System 2: Waters Fractionlynx system equipped with an Agilent Prep-C18, 5 μm (21.2×50 mm) column using water containing 0.1% formic acid as mobile phase A, and acetonitrile with 0.1% formic acid as mobile phase B. The gradient was 45-95% mobile phase B over 7.5 min, held at 95% for 1 min, and then returned to 45% over 1.5 min with a flow rate of 28 mL/min. Fractions were collected by UV detection at 254 nm or by mass and evaporated using a Genevac EZ-2.

Chiral Methods

Chiral Method:

Enantiomeric excess was determined by integration of peaks that were separated on a Diacel Chiralpak IA, 4.6×250 mm column, 5 μm particle size. The solvents used were “Solvent A”: 4:1 (hexanes with 0.2% TFA): DCM, and “Solvent B”: EtOH. The flow rate was held at 1.0 mL/min with the following gradient: Increase Solvent B from 2-10% over 30 min, hold Solvent B at 10% for 15 min.

Chiral Method 2:

Enantiomeric excess was determined by integration of peaks that were separated on a Daicel Chiralpak IC, 4.6×250 mm column, 5 μm particle size running an isocratic mixture of 76% (0.2% TFA in iso-hexanes), 19% DCM and 5% EtOH at a flow rate of 1.5 mL/min.

Chiral Preparative HPLC:

This was carried out using a Gilson preparative HPLC system equipped with a Daicel Chiralpak IC column, 20×250 mm column, 5 μm particle size running an isocratic mixture of mobile phase A (60% (0.2% TFA in iso-hexanes) and 40% DCM) at 15 mL/min and at-column-dilution with mobile phase B (EtOH) at 1.5 mL/min. Fractions were collected by UV detection at 254 nm and evaporated using a Genevac EZ-2.

Experimental Procedures General Procedures

General Procedure 1: Preparation of Nitriles.

A stirred a solution of bromide or triflate (1 eq), zinc cyanide (2 eq) and tetrakis (triphenylphosphine) palladium (1-5 mol %) in dry NMP (0.5-1 M) was degassed with N₂. The reaction was heated to 100° C. for 18 h while stirring under N₂. The reaction mixture was cooled and poured into water and DCM. The solid material was removed by filtration and the filtrate was extracted with water. The organic layer was dried over MgSO₄ and concentrated. The crude product was purified by chromatography.

General Procedure 2: Preparation of Amidoximes.

To a stirring solution of nitrile (1 eq) in EtOH was added hydroxylamine (50% solution in H₂O, 5 eq) and TEA (1.1 eq). The mixture was heated for 2-12 h at 80-85° C. then concentrated. The resulting solid was dissolved in EA, washed with water, then dried with Na₂SO₄, concentrated and used without further purification. Alternatively, to a stirring solution of nitrile (1 eq) and TEA (2-3 eq) in DMF or EtOH was added hydroxylamine hydrochloride (2-3 eq). The mixture was stirred at room temperature up to 80° C. for up to 24 h then concentrated. The resulting solid was dissolved in EA or DCM, washed with water or brine, then dried with Na₂SO₄, concentrated, and used without further purification.

General Procedure 3: Preparation of Amides Via Acid Chlorides.

To a solution of amine (1 eq) and base (either DIEA or TEA) (2-3 eq) in DCM (0.06-0.30 M) was treated with the appropriate acid chloride (1.0-1.5 eq). The reaction mixture was stirred until the reaction was complete. The reaction was diluted with DCM and washed with saturated aqueous NaHCO₃. The organic layer was dried over MgSO₄ and concentrated. The product was purified by chromatography or preparative HPLC. Alternatively, the crude reaction mixture can be carried on to the next step without further purification.

General Procedure 4: Hydrolysis of Esters to Acids.

To a stirring solution of ester (1 eq) in THF or dioxane and water, was added NaOH or LiOH (1-3 eq). The reaction mixture was stirred at up to 60° C. for up to 18 h. The reaction mixture was neutralized with AcOH or HCl and either diluted with water or concentrated. If the reaction mixture was diluted with water, then HCl was added to acidify the reaction mixture to a pH of approximately 2. The resulting precipitate was isolated by filtration to yield product which can be purified by chromatography, preparative HPLC, or used without purification. If the reaction mixture was concentrated, the crude material was diluted with DCM or EA and washed with brine. The organic layer was concentrated and purified by chromatography or preparative HPLC to give final product. Alternatively, the crude material can be carried forward without purification.

Dealkylation of methyl esters: A stirred solution of methyl ester (1 eq) in refluxing pyridine (0.03-0.17 M) was treated with LiI (10 eq). Heating was continued until the reaction was adjudged complete by LCMS analysis. The mixture was allowed to cool then acidified with HCl and extracted with EA or DCM. The organic layer was dried over MgSO₄ and evaporated and the residue purified by preparative HPLC or column chromatography.

General Procedure 5: Preparation of Oxadiazoles via Acids or Acid Chlorides. Oxadiazoles via Acids:

To a solution of acid (1 eq) in DMF was added HOBt (2 eq) and EDC (2 eq). After stirring for 2 h, amidoxime (2 eq) was added and the mixture was stirred at room temperature for up to 12 h. The reaction mixture was then heated to 100° C. for up to 12 h. Alternatively, after stirring at room temperature, the reaction mixture was diluted with DCM, washed with NaHCO₃, then dried with Na₂SO₄ and concentrated. The resulting residue was dissolved in EtOH and heated in a microwave for 35 min at 110° C. The solvent was removed and the final product was purified by preparative HPLC.

Oxadiazoles via Acid Chlorides: To synthesize oxadiazoles via acid chlorides, dioxanes and DIEA (1.5 eq) were added to a stirred solution of amidoxime (1 eq) followed by an acid chloride (1.1 eq). The reaction mixture was stirred at room temperature for 30 min then at 120° C. for up to 6 h. The reaction mixture was allowed to cool to room temperature, diluted with EA and washed with brine. The organics were concentrated and the residue purified by chromatography.

General Procedure 6: Removal of Tert-Butyl Carbamate.

A solution of the tert-butyl carbamate (1 eq) in DCM (0.06 M) was treated with TFA (0.16-0.33 M) or HCl in ether (0.16-0.33 M). The reaction mixture was stirred at either room temperature or 30° C. until complete. The solvent was removed and the product was purified by chromatography or preparative HPLC.

General Procedure 7: Preparation of Amides Via Peptide Coupling.

A solution of amine (1.0 eq) and base (DIEA, TEA or NMM) (0-3.0 eq) in DCM or DMF (0.08-0.10 M) was treated with the appropriate carboxylic acid (1.0-1.5 eq). To this mixture was added the coupling reagent. The coupling reagent could be HATU (1.05-2.5 eq) optionally with DMAP (0.01-1 eq), EDC (1.5 eq) with HOBt (1.5 eq) or DMAP (2.0 eq), DCC (1.1 eq) with HOBt (1.1 eq) or DCC (1.5 eq) with DMAP (2.0 eq). The reaction mixture was stirred until the reaction was complete. The reaction was diluted with EA and washed with saturated aqueous NaHCO₃. The organic layer was dried over MgSO₄ and concentrated. The product was purified by chromatography or alternatively can be carried on to the next step without further purification.

General Procedure 8: Deprotection of Esters to Acids, Deprotection Boc-Amines, and/or Protodesilylation of Protected Alcohols

A solution of the tert-butyl ester or Boc-amine (1.00 eq) in DCM (0.06 M) was treated with TFA (0.16-0.33 M) or 1-4 N HCl in ether or dioxane (10.0-20.0 eq). The reaction mixture was stirred at either room temperature or 30° C. until complete. The solvent was removed and the product was purified by chromatography or preparative HPLC. This procedure was also applicable for protodesilylation of tert-butyl dimethylsilyl protected alcohols.

A solution of the methyl ester (1.00 eq) in dioxane (0.04-0.08 M) was treated with 1-6N aqueous HCl (10-100 eq). The reaction mixture was stirred at either room temperature or 30° C. until complete. The solvent was removed and the product was purified by chromatography or preparative HPLC.

General Procedure 9: Formation of Triflate.

A solution of the phenol (1.0 eq) in DCM (0.25 M) was treated with 1,1-trifluoro-N-phenyl-N-((trifluoromethyl))sulfonyl)methanesulfonamide (1.1 eq). The reaction mixture was stirred at room temperature until complete. The reaction was stirred with water and saturated aqueous NaHCO₃. The organic layers was dried and concentrated. The material was purified by chromatography or alternatively used without purification.

General Procedure 10: Palladium-Catalyzed Coupling Reactions.

A solution of boronic acid or boronate ester (1.0-1.3 eq), halide (1.0-1.3 eq), sodium bicarbonate or sodium carbonate decahydrate (2.0-2.5 eq), and dichloro[1,1′-bis(di-tert-butylphosphino)ferrocene]palladium(II) or Pd(dppf)Cl₂ were combined in THF, acetonitrile, or dioxane (0.1-0.2 M) and water (0.25-0.50 M). The reaction was heated at 80 to 100° C. until complete. The reaction was diluted with EA and washed with saturated aqueous NaHCO₃. The organic layer was dried over MgSO₄ and concentrated. The product can be purified by chromatography, preparative HPLC, or carried on to the next step without further purification.

General Procedure 11: Palladium-Catalyzed Aryl Amidation.

A solution of aryl bromide or triflate (1.00 eq), sodium tert-butoxide or cesium carbonate (1-2 eq) and amine (1.0-1.5 eq) in dioxane or THF (0.05M) was degassed using N₂ bubbling for 10 min. Pd₂(dba)₃ (0.10 eq) and 2-dicyclohexylphosphino-2′-(N,N-dimethylamino)biphenyl (0.15 eq) are added and the reaction mixture was heated for 45-60 min at 100-120° C. in a microwave reactor or up to 80° C. with conventional heating for up to 18 h. The reaction was diluted with EA and washed with saturated aqueous NaHCO₃. The organic layer was dried over Na₂SO₄ and concentrated. The product can be purified by chromatography, preparative HPLC, or carried on to the next step without further purification.

General Procedure 12: Alklation of Phenols, Imidazoles, Lactams and Amines.

To a solution of a phenolic intermediate in DMF, acetone or ACN (0.1 M) were added the appropriate bromoalkane (1.5 eq) or tosylate and either Cs₂CO₃ (1.5-2.0 eq) or K₂CO₃ (1.5-2.0 eq). The reaction mixture was heated at 40-70° C. for up to 18 h, then diluted with DCM and washed with H₂O. The organic layer was dried over Na₂SO₄ and concentrated. The product can be purified by chromatography, preparative HPLC, or carried on to the next step without further purification.

General Procedure 13: Sulfonate or Sulfonamide Formation.

To a solution of alcohol or amine in DCM (0.02 M) was added the sulfonyl chloride (2 eq) and triethylamine (3 eq). The reaction was stirred at room temperature until complete. The reaction was diluted with DCM and washed with saturated aqueous NaHCO₃. The organic layer was dried over MgSO₄ and concentrated. The product can be purified by chromatography, preparative HPLC, or carried on to the next step without further purification.

General Procedure 14: Reduction of Aryl Nitro to an Aryl Amine.

To a stirring solution of aryl nitro (1 eq) in THF purged with N₂ was added palladium on carbon. The reaction mixture was subjected to an H₂ atmosphere for up to 4 h. The reaction mixture can be filtered over a pad of celite and solvent concentrated. The crude material was carried forward without further purification.

General Procedure 15: Preparation of a Secondary or Tertiary Amine Via Reductive Amination.

To a stirring solution of aldehyde or ketone (0.9-1.0 eq) in DCM or 1,2-dichloroethane or THF was added an amine (0.9-1.1 eq). After stirring at room temperature for up to 2 h, one drop of acetic acid (optional) was added followed by sodium triacetoxyborohydride (1.5-2.0 eq) and the reaction mixture was stirred overnight. In some cases it is necessary to filter the reaction mixture, redissolve and add additional reducing agent to drive the reaction to completion. The crude reaction mixture was quenched with NaHCO₃ and stirred for 5 min. The aqueous layer was extracted with DCM and the organic layer was dried over MgSO₄ and concentrated. The final product was isolated by chromatography.

General Procedure 16: Preparation of 2-Iodopyrimidine

To a stirring solution of a 2-chloro pyrimidine (1 eq) in 57% aqueous hydrogen iodide (1 mL) was added sodium iodide (2 eq). The reaction mixture was stirred at ambient temperature until the starting material was consumed. The reaction mixture was quenched with NaHCO₃ (5 mL) then extracted with EA (3×5 mL). The combined organic layer was washed with brine (10 mL), dried over MgSO₄ and concentrated. The crude product was used in the subsequent step without purification.

General Procedure 17. Preparation of 2-Iodopyridine

To a stirring solution of a 2-chloropyridine (1 eq) in acetonitrile (2 mL) was added sodium iodide (6 eq). The reaction mixture was heated to 40° C. and acetyl chloride (0.6 eq) was added. The reaction mixture was stirred until the staring material was consumed. The reaction was quenched with NaHCO₃ (5 mL) and extracted with EA (3×5 mL). The combined organic layer was washed with brine (10 mL), dried over MgSO₄ and concentrated. The crude product was used in the subsequent step without purification.

General Procedure 18: Hydrogenation to Reduce an Alkene or Deprotect Cbz-Protected Amine, Benzyl Esters, or Benzyl Amines

Conventional Hydrogenations: To a stirring solution of alkene, Cbz-protected amine, benzyl protected ester, or benzyl protected amine (1.0 eq) in EA, THF, EtOH, or MeOH (0.01-0.05 M) was added Pd/C and the reaction was stirred under hydrogen until complete. The catalyst was filtered and the solvent was removed. The product was purified by chromatography or alternatively can be carried onto the next step without further purification.

Hydrogenation using H-cube: A solution of alkene, Cbz-protected amine, benzyl protected ester, or benzyl protected amine (1.0 eq) in dioxane or THF (0.01-0.03 M) was passed over a 10% Pd/C CatCart in a Thales Nanotechnology H-Cube reactor at 1 mL/min. The solvent was evaporated and the product was carried to the next step without further purification.

General Procedure 19: Preparation of Aryl-Acids from Aryl Bromides

To a stirring solution of oven-dried lithium formate (3 eq) and DIEA (2 eq) under N₂ in DMF (0.1 M) was added acetic anhydride (2 eq). After 30 minutes, the mixture was degassed by N₂ bubbling for 15 min and then added to a similarly degassed solution of aryl bromide (1 eq) and PdCl₂ (dppf) (0.1 eq) in DMF (0.1 M). The resulting mixture was heated in a microwave reactor for 1 hr at 120° C. After cooling, the mixture was diluted with DCM and washed with water. The organic layer was dried (Na₂SO₄) and concentrated. The resulting crude material was purified by chromatography.

General Procedure 20: Alkylation of Phenols Via Mitsunobu Condensation of Alcohols

To a stirring solution of phenol (1 eq) in THF was added an alcohol (1.1 eq), triphenyl phospine (1.1 eq) and diisopropyl azodicarboxylate (1.1 eq). The reaction mixture was stirred overnight, concentrated and purified by preparative HPLC.

General Procedure 21: Palladium Catalyzed Coupling (Sonogashira Coupling)

To a suspension of alkyne (1 eq), iodide (1.2 eq), and diethylamine (5 eq) in anhydrous diethyl ether (0.2 M) was added CuI (0.1 eq) followed by Pd(PPh₃)₂Cl₂ (0.05 eq). The reaction mixture was stirred under N₂ at room temperature for 24 h. The reaction mixture was diluted with ethyl acetate, washed with saturated aqueous ammonium chloride then brine, and dried over MgSO₄. The crude product was purified by silica gel column chromatography.

General Procedure 22: Methyl or Ethyl Ester Formation

To a stirring suspension of amino acid (1 eq) in MeOH or EtOH (0.5 M) was added TMS-Cl (4-10 eq) and the mixture stirred at ambient temperature (RT-reflux) for 4-24 h. The reaction mixture was cooled and concentrated/purified to yield desired ester.

General Procedure 23: Boc Protection.

To a stirring suspension of amino ester (1 eq) in DCM (0.25 M) at 0° C. was added DIEA (1.1 eq) and di-tert-butyl dicarbonate (1.2 eq). The reaction was stirred for between 4-24 h before being washed with water and dried over MgSO₄. The final product was isolated by chromatography.

General Procedure 24: Swern Oxidation

To a stirring solution of oxalyl chloride (1.6 eq) in DCM (0.17 M) at −78° C. was added DMSO (3.2 eq) and the reaction stirred for 10 mins. A solution of alcohol (1 eq) in DCM was then added by cannula and the reaction stirred at −78° C. for 2 h before the addition of DIEA (5 eq). The solution was warmed to 0° C., stirred for an additional 60 minutes then washed with saturated ammonium chloride solution. The organic layer was dried over MgSO₄ and concentrated. The crude product was purified by column chromatography or used directly

General Procedure 25: Sodium Borohydride Reduction

To a stirring solution of ketone (1 eq) in MeOH (0.17 M) at −78° C. was added NaBH₄ (0.7 eq). The reaction was stirred for 30 min before the addition of saturated ammonium chloride solution and warming to room temperature. MeOH was removed by reduced pressure distillation and the aqueous extracted with DCM. The combined organic extracts were dried over MgSO₄ and concentrated. The final product was isolated by chromatography.

General Procedure 26: t-Butyl Ester Formation

To a stirring suspension of acid (1 eq) in DME (0.5 mL) at −10° C. was added concentrated sulfuric acid (6 eq) followed by 2-methylprop-1-ene (100 eq). The mixture was sealed in a pressure vessel and stirred at 0° C. for 18 h. The reaction was then cooled to −10° C. and the vessel opened. The reaction was warmed to RT over 30 minutes over which time all the isobutylene evaporated. The reaction was diluted with EA and saturated sodium bicarbonate was added to pH8 with vigorous stirring. The phases were separated and the aqueous re-extracted with EA. The combined organic extracts were dried over MgSO₄ and concentrated. The final product was isolated by chromatography.

General Procedure 27: Boronic Acid Synthesis.

To a stirring solution of bromide (1 eq) in THF (0.14 M) at −78° C. was added butyllithium (1.5 eq) and the solution stirred for 20 mins. Trimethyl borate (1.1 eq) was added and the reaction warmed to RT. The mixture was quenched with water and extracted with ethyl acetate. The combined organics were washed successively with 1 N HCl and saturated brine (50 ml), dried over MgSO₄ and concentrated. The final product was isolated by chromatography.

General Procedure 28: Hydrazide Formation

To a stirring solution of methyl ester (1 eq) in 1:1 THF: EtOH (0.05 M) was added hydrazine hydrate (10 eq) and the solution stirred for 16 h. The product was precipitated with water and isolated by filtration.

General Procedure 29: Oxadiazole Thione Formation

To a stirring solution of hydrazide (1 eq) and DIEA in THF (0.027 M) was added thiocarbonyldiimidazole (1.2 eq) and the solution stirred for 2 h. The mixture was warmed to 45° C. for a further l h then quenched with aqueous AcOH and extracted with DCM. The organics were dried through a hydrophobic frit and concentrated. The final product was isolated by chromatography.

General Procedure 30: Amino Alcohol Synthesis.

To a stirring solution of diisopropylamine (1.15 eq) in THF (0.34 M) at 0° C. was added butyllithium (1.1 eq of a 2.4 M solution in hexanes). After 30 mins, the mixture was cooled to −78° C. and treated with tert-butyl 2-((diphenylmethylene)amino)acetate (1 eq). After 30 mins, chlorotrimethylsilane (3 eq) was added and the mixture allowed to warm to room temperature. The resulting solution was added to a stirring solution of aldehyde (1 eq) and zinc chloride (0.05 eq of a 0.5 M solution in diethyl ether) in THF (0.36 M). After 16 h, the mixture was quenched with 10% aqueous citric acid and stirred for a further 16 h. The product was isolated by direct strong-cation-exchange ion-exchange chromatography of the reaction mixture and used without further purification.

General Procedure 31: Tyrosine Analog by Negishi Coupling

To a stirring solution of zinc (3 eq) in DMF (1-1.4 M) was added iodine (1 eq). When the colour had been discharged, (R)-methyl 2-((tert-butoxycarbonyl)amino)-3-iodopropanoate (1 eq) and additional iodine (0.15 eq) were charged. After 30 mins, aryl halide (1 eq), Pd₂dba₃ (2.5 mol %) and S-Phos (5 mol %) were charged and the mixture stirred at room temperature or heated to 50° C. for 2-16 h. The product was directly isolated by column chromatography.

General Procedure 32: Stille Coupling

To a stirring solution of aryl halide (1 eq) and stannane (1 eq) in DMF (0.22 M) was added cesium fluoride (2 eq), copper iodide (1 eq) and Pd(PPh₃)₄ (7 mol %). The mixture was heated at 50° C. for 16 h then diluted with THF and EA, filtered through Celite and evaporated. The product was isolated by column chromatography. Alternatively, a solution of aryl halide (1 eq) and stannane (1 eq) in DMF (0.1 M) was treated with PdCl₂(PPh₃)₄ (10 mol %) and heated to 80-100° C. for 3-6 h. The product was directly isolated by column chromatography.

General Procedure 33: Tyrosine Analogue by HWE

To a stirring solution of aldehyde (1 eq) and methyl 2-((tert-butoxycarbonyl)amino)-2-(dimethoxyphosphoryl)acetate in DCM (0.27 M) was added dropwise DBU (2 eq). After 16 h, the mixture was washed successively with NaHCO₃ and aqueous AcOH, dried over MgSO₄ and evaporated. The product was isolated by column chromatography.

General Procedure 34: Radical Bromination

To a stirring solution of substrate (1 eq) and N-bromosuccinimide (1.1 eq) in carbon tetrachloride (0.29 M) was added azobis-iso-butyronitrile (0.1 eq) and the mixture heated under reflux. After 2 h, the mixture was allowed to cool, filtered through cotton wool and evaporated. The product was isolated by column chromatography.

General Procedure 35: Tyrosine Analog by Alkylation

To a stirring solution of tert-butyl 2-((diphenylmethylene)amino)acetate (1 eq) in THF (0.16 M) at 0° C. was added sodium hydride (1.2 eq). After 30 mins, bromide (1 eq) was added and the mixture warmed to room temperature over 1 h. The mixture was quenched into water and extracted with EA. The combined organic extracts were dried over MgSO₄ and solvents evaporated. The product was isolated by column chromatography.

General Procedure 36: Ullmann Coupling

To a stirring solution of aryl bromide (1 eq) and alcohol (10 eq) in toluene (0.1 M) was added copper iodide (0.1 eq), 1,10-phenanthroline (0.2 eq) and cesium carbonate (1.5 eq). The mixture was heated at 110° C. for 16 h then quenched with aqueous acetic acid and extracted with EA. The combined organic extracts were dried over MgSO₄ and solvents evaporated. The product was isolated by column chromatography.

General Procedure 37: Ketone Coupling

To a stirring solution of aryl bromide (1 eq) in dioxane (0.06 M) was added ketone (1-2 eq), tosylhydrazine (1-2 eq), lithium tert-butoxide (3-5.5 eq), Pd₂dba₃ (2 mol %) and Xphos (8 mol %). The mixture was heated to 100° C. for 16 h then quenched with aqueous acetic acid and extracted with DCM. The combined organic extracts were dried over MgSO₄ and solvents evaporated. The product was isolated by column chromatography or preparative HPLC.

General Procedure 38: Organometallic Addition to Ketone

To a stirring solution of organometallic reagent (1.1 eq) in THF (0.4 M) was added a solution of ketone (1 eq) in THF (1.2 M) at −5° C. After 1 h, the mixture was quenched with aqueous ammonium chloride and extracted with DCM. The combined organic extracts were dried over MgSO₄ and solvents evaporated. The product was isolated by column chromatography.

General Procedure 39: Elimination of an Alcohol to Alkene

A solution of the alcohol (1 eq) in DCM (0.06-1 M) was treated with TFA (0.16-10 M). The reaction mixture was stirred at either room temperature or 30° C. until complete. The solvent was removed and the product was purified by chromatography or preparative HPLC.

General Procedure 40: Acidic Deprotection of Cbz-Amine

A solution of Cbz-amine (1 eq) in DCM (0.03 M) was treated with boron tribromide (2 eq). After 2 h, the mixture was quenched with MeOH and basified with methanolic ammonia. The solvents were evaporated and the product purified by column chromatography.

Synthesis of Representative Compounds 4-(heptyloxy)benzonitrile

Prepared using General Procedure 1: A stirred a solution of 1-bromo-4-(heptyloxy)benzene (2.0 g, 7.37 mmol), zinc cyanide (1.73 g, 14.74 mmol) and tetrakis (triphenylphosphine) palladium (76.12 mg, 0.07 mol) in dry NMP (20 mL) was degassed with N₂. The reaction was heated to 100° C. for 18 h while stirring under nitrogen. The reaction mixture was cooled and poured into water (100 mL) and DCM (20 mL). The solid material was removed by filtration and the filtrate was extracted with water (3×20 mL). The organic layer was dried over MgSO₄ and concentrated. The crude product was purified by chromatography (EA/hexanes) to afford 1.15 g (73%) of 4-(heptyloxy)benzonitrile as a light yellow solid. LCMS-ESI (m/z) calculated for C₁₄H₁₉NO: 217.1. found 218.1 [M+H]⁺, t_(R)=11.14 min (Method 2). ¹H NMR (400 MHz, CDCl₃) δ 7.64-7.50 (m, 2H), 7.05-6.83 (m, 2H), 3.99 (t, J=6.5 Hz, 2H), 1.89-1.69 (m, 2H), 1.58-1.12 (m, 8H), 0.90 (dd, J=9.1, 4.5 Hz, 3H). ¹³C NMR (101 MHz CDCl₃) δ 162.47, 133.91, 132.78, 132.12, 129.13, 119.31, 115.18, 103.58, 68.41, 31.73, 28.98, 25.89, 22.58, 14.07.

(Z)-4-(heptyloxy)-N′-hydroxybenzimidamide

Prepared using General Procedure 2: To a stirring solution of 4-(heptyloxy)benzonitrile (1.0 g, 4.6 mmol) in EtOH (15 mL) were added hydroxylamine hydrochloride (0.96 g, 13.8 mmol) and TEA (2.22 g, 23.0 mmol). The reaction was heated to 85° C. for 2 h. The solvent was removed under reduced pressure and the residue was diluted with water (20 mL) and extracted with DCM (3×10 mL). The combined organic layers were concentrated under reduced pressure. The crude material was crystallized from isopropanol (20 mL) to afford 1.05 g (91%) of (Z)-4-(heptyloxy)-N′-hydroxybenzimidamide as a white solid. LCMS-ESI (m/z) calculated for C₁₄H₂₂N₂O₂: 250.2. found 251.3 [M+H]⁺, t_(R)=1.70 min (Method 1). ¹H NMR (400 MHz, CDCl₃) δ 9.45 (s, 1H), 7.59 (d, J=8.6 Hz, 2H), 6.93 (t, J=14.7 Hz, 2H), 5.82-5.48 (m, 2H), 3.97 (t, J=6.5 Hz, 2H), 1.83-1.55 (m, 2H), 1.56-1.05 (m, 8H), 0.87 (t, J=6.7 Hz, 3H). ¹³C NMR (101 MHz CDCl₃) δ 159.19, 150.53, 126.64, 125.55, 113.87, 67.40, 31.21, 28.62, 28.40, 25.44, 22.02, 13.92.

(S)-methyl 4-(2-amino-3-methoxy-3-oxopropyl)benzoate

To a solution of (S)-2-amino-3-(4-(tert-butoxycarbonyl)phenyl)propanoic acid (500.0 mg, 1.88 mmol) in MeOH (20 mL) at 0° C. was slowly added thionyl chloride (447.64 mg, 3.77 mmol). The reaction was stirred for 1 h at 0° C. then warmed to room temperature and stirred for 1 h. The solvent was removed under reduced pressure. The reaction mixture was washed with saturated aqueous NaHCO₃ (20 ml) and extracted with DCM (3×10 ml). The organic layer was dried over MgSO₄ and concentrated. The crude product was purified by chromatography (EA/hexanes) to afford 425 mg (95%) of (S)-methyl 4-(2-amino-3-methoxy-3-oxopropyl)benzoate as the HCl salt. LCMS-ESI (m/z) calculated for C₁₂H₁₅NO₄: 237.1. found 238.0 [M+H]⁺, t_(R)=1.01 min (Method 1). ¹H NMR (400 MHz, CDCl₃) δ 8.55 (s, 3H), 7.94 (d, J=8.3 Hz, 2H), 7.41 (d, J=8.3 Hz, 2H). 4.37 (t, J=6.8 Hz, 1H), 3.86 (s, 3H), 3.68 (s, 3H), 3.20 (dd, J=11.8, 6.8 Hz, 2H).

(S)-methyl 4-(2-(4-(tert-butyl)benzamido)-3-methoxy-3-oxopropyl)benzoate

Prepared using General Procedure 3: To the solution of (S)-methyl 4-(2-amino-3-methoxy-3-oxopropyl)benzoate (425.0 mg, 1.79 mmol) in DCM (10 mL) and DIEA (463.0 mg, 3.58 mmol) was added 4-(tert-butyl)benzoyl chloride (556.6 mg, 2.83 mmol) at room temperature. The reaction was stirred for 2 h and the reaction was partitioned between DCM and saturated aqueous NaHCO₃. The organic layer was dried over MgSO₄ and concentrated. The crude product was purified by chromatography (EA/hexanes) to afford 317 mg (45%) of (S)-methyl 4-(2-(4-(tert-butyl)benzamido)-3-methoxy-3-oxopropyl)benzoate. LCMS-ESI (m/z) calculated for C₂₃H₂₇NO₅: 397.2. found 398.1 [M+H]³⁰, t_(R)=2.31 min (Method 1). ¹H NMR (400 MHz, CDCl₃) δ 7.97-7.75 (m, 2H), 7.67-7.51 (m, 2H), 7.46-7.26 (m, 2H), 7.14 (d, J=8.3 Hz, 2H), 6.60 (d, J=7.4 Hz, 1H), 5.03 (dt, J=7.4, 5.7 Hz, 1H), 3.82 (s, 3H), 3.68 (s, 3H), 3.28 (dd, J=13.7, 5.8 Hz, 1H), 3.18 (dd, J=13.7, 5.5 Hz, 1H), 1.24 (s, 9H).

(S)-4-(2-(4-(tert-butyl)benzamido)-3-methoxy-3-oxopropyl)benzoic acid (INT-1)

Prepared using General Procedure 4: To a stirred solution of (S)-methyl 4-(2-(4-(tert-butyl)benzamido)-3-methoxy-3-oxopropyl)benzoate (316.6 mg, 0.79 mmol) in dioxane (15 mL) and water (1 mL) at 0° C. was added lithium hydroxide monohydrate (93.52 mg, 2.23 mmol). After 2 h, the solution was neutralized with 1 M HCl to pH 7.0. The mixture was partitioned between DCM (15 mL) and saturated aqueous NaHCO₃ (10 mL). The organic layer was washed with saturated aqueous NaHCO₃ (3×10 mL) and brine (10 mL). The organic layer was dried over MgSO₄ and concentrated to afford 208 mg (69%) of (S)-4-(2-(4-(tert-butyl)benzamido)-3-methoxy-3-oxopropyl)benzoic acid (INT-1). LCMS-ESI (m/z) calculated for C₂₂H₂₅NO₅: 383.2. found 384.1 [M+H]⁺, t_(R)=2.13 min. (Method 1). ¹H NMR (400 MHz, DMSO) δ 12.86 (s, 1H), 8.80 (d, J=8.0 Hz, 1H), 7.87-7.78 (m, 2H), 7.75-7.65 (m, 2H), 7.50-7.35 (m, 4H), 4.72 (ddd, J=10.3, 8.0, 5.1 Hz, 1H), 3.65 (s, 3H), 3.28-3.05 (m, 2H), 1.29 (s, 9H). ¹³C NMR (101 MHz, DMSO) δ 173.00, 167.21, 166.29, 154.39, 143.10, 130.85, 129.34, 129.27, 129.21, 129.03, 127.21, 125.39, 125.10, 53.75, 52.04, 34.64, 30.92, 30.88.

(S)-methyl 2-(4-(tert-butyl)benzamido)-3-(4-(3-(4-(heptyloxy)phenyl)-1,2,4-oxadiazol-5-yl)phenyl)propanoate

Prepared using General Procedure 5: To a solution of (S)-4-(2-(4-(tert-butyl)benzamido)-3-methoxy-3-oxopropyl(benzoic acid (INT-1) (10.0 mg, 0.026 mmol) in anhydrous DMF (1 mL) was added HOBt (5.27 mg, 0.39 mmol) and EDC (7.48 mg, 0.39 mmol). After stirring for 2 h, (Z)-4-(heptyloxy)-N′-hydroxybenzimidamide (9.76 mg, 0.39 mmol) was added. The reaction mixture was stirred at room temperature for 2 h, partitioned between saturated aqueous NaHCO₃ (5 ml) and EA (5 mL), and concentrated under reduced pressure to afford the intermediate (S)-methyl 2-(4-(tert-butyl)benzamido)-3-(4-(((4-(heptyloxy)benzimidamido)oxy)carbonyl)phenyl)propanoate. The intermediate was dissolved in DMF (1 mL) and heated to 100° C. for 18 h. The reaction mixture was cooled to room temperature and partitioned between EA (5 mL) and saturated aqueous NaHCO₃ (5 mL). The organic layer was extracted with water (2×5 mL) and brine (5 mL). The organic layer was dried over MgSO₄ and concentrated. The brown oil was purified by preparative HPLC to afford 4.5 mg (29%) of (S)-methyl 2-(4-(tert-butyl)benzamido)-3-(4-(3-(4-(heptyloxy)phenyl)-1,2,4-oxadiazol-5-yl)phenyl)propanoate. LCMS-ESI (m/z) calculated for C₃₆H₄₃N₃O₅: 597.3; no m/z observed, t_(R)=12.75 min (Method 2). ¹H NMR (400 MHz, DMSO) δ 8.85 (d, J=8.0 Hz, 1H), 8.09 (d, J=8.3 Hz, 2H), 8.00 (d, J=8.9 Hz, 2H), 7.74 (d, J=8.5 Hz, 2H), 7.59 (d, J=8.4 Hz, 2H), 7.48 (d, J=8.6 Hz, 2H), 7.12 (d, J=8.9 Hz, 2H), 4.87-4.56 (m, 1H), 4.06 (t, J=6.5 Hz, 2H), 3.67 (s, 3H), 3.32-3.13 (m, 4H), 1.74 (dd, J=14.2, 6.5 Hz, 2H), 1.51-1.37 (m, 2H), 1.33 (s, 4H), 1.26 (d, J=20.2 Hz, 9H), 0.88 (t, J=6.9 Hz, 3H). ¹³C NMR (101 MHz, DMSO) δ 175.00, 171.91, 167.89, 166.27, 161.21, 154.37, 143.68, 130.78, 130.30, 128.76, 127.80, 127.18, 125.07, 121.69, 118.21, 115.07, 67.72, 53.61, 52.05, 36.15, 34.60, 31.20, 30.87, 28.54, 28.39, 25.40, 22.02, 13.93.

(S)-2-(4-(tert-butyl)benzamido)-3-(4-(3-(4-(heptyloxy)phenyl)-1,2,4-oxadiazol-5-yl)phenyl)propanoic acid (Compound 1)

Prepared using General Procedure 4: To a solution of (S)-methyl 2-(4-(tert-butyl)benzamido)-3-(4-(3-(4-(heptyloxy)phenyl)-1,2,4-oxadiazol-5-yl)phenyl)propanoate (4.52 mg, 0.008 mmol) in MeOH (2 mL) was added of 1 N NaOH (1 mL). The reaction mixture was stirred at 50° C. for 3 h. The resulting mixture was purified by preparative HPLC to afford 0.36 mg (8%) of (S)-2-(4-(tert-butyl)benzamido)-3-(4-(3-(4-(heptyloxy)phenyl)-1,2,4-oxadiazol-5-yl)phenyl) propanoic acid (Compound 1). LCMS-ESI (m/z) calculated for C₃₅H₄₁N₃O₅: 583.7; no m/z observed, t_(R)=12.59 min (Method 2).

(S)-methyl 2-amino-3-(4-cyanophenyl)propanoate

To a solution of (S)-2-((tert-butoxycarbonyl)amino)-3-(4-cyanophenyl)propanoic acid (1.0 g, 3.44 mmol) in MeOH (20 mL) at 0° C. was slowly added thionyl chloride (818.1 mg, 6.89 mmol) over 1 h. The reaction was warmed to room temperature and stirred for 1 h. The solvent was removed under reduced pressure. The reaction mixture was washed with saturated aqueous NaHCO₃ (20 ml) and extracted with DCM (3×10 ml). The organic layer was dried over MgSO₄ and concentrated. The crude product was purified by chromatography (EA/hexanes) to afford 789 mg (97%) of (S)-methyl 2-amino-3-(4-cyanophenyl)propanoate as the HCl salt. LCMS-ESI (M/z) calculated for C₁₁H₁₂N₂O₂; 204.1. found 205.0 [M+H]⁺, t_(R)=3.25 min (Method 1). ¹H NMR (400 MHz, CDCl₃) δ 8.69 (s, 3H), 7.83 (d, J=8.3 Hz, 2H), 7.51 (t, J=8.8 Hz, 2H), 4.37 (t, J=6.7 Hz, 1H), 3.68 (s, 3H), 3.23 (qd, J=14.4, 7.7 Hz, 2H).

(S)-methyl 2-(4-(tert-butyl)benzamido)-3-(4-cyanophenyl)propanoate

Prepared using General Procedure 3: To the solution of (S)-methyl 2-amino-3-(4-cyanophenyl)propanoate (789.2 mg, 3.32 mmol) in DCM (15 mL) and DIEA (1.29 g, 9.96 mmol) was added 4-(tert-butyl)benzoyl chloride (981.3 mg, 4.99 mmol) at room temperature. The reaction was stirred for 2 h and the reaction was partitioned between DCM and saturated aqueous NaHCO₃. The organic layer was dried over MgSO₄ and concentrated. The crude product was purified by chromatography (EA/hexanes) to afford 1.06 g (88%) of (S)-methyl 2-(4-(tert-butyl)benzamido)-3-(4-cyanophenyl)propanoate. LCMS-ESI (m/z calculated for C₂₂H₂₄N₂O₃: 364.2. found 365.3 [M+H]⁺, t_(R)=3.55 min (Method 1). ¹H NMR (400 MHz, CDCl₃) δ 8.81 (d, J=8.0 Hz, 1H), 7.85-7.60 (m, 4H), 7.49 (dd, J=15.1, 8.4 Hz, 4H), 4.85-4.60 (m, 1H), 3.65 (s, 3H), 3.30-3.23 (m, 1H), 3.18 (dd, J=13.7, 10.6 Hz, 1H), 1.29 (s, 9H).

(S,Z)-methyl 2-(4-(tert-butyl)benzamido)-3-(4-(N′-hydroxycarbamimidoyl) phenyl) propanoate (INT-2)

Prepared using General Procedure 2: To a stirring solution (S)-methyl 2-(4-(tert-butyl)benzamido)-3-(4-cyanophenyl)propanoate (1.0 g, 2.74 mmol) in EtOH (15 mL) were added hydroxylamine hydrochloride (572.2 mg, 8.22 mmol) and TEA (1.38 g, 13.7 mmol). The reaction was heated to 85° C. for 2 h. The solvent was removed under reduced pressure and the residue was diluted with water (20 mL) and extracted with DCM (3×10 mL). The combined organic layers were concentrated under reduced pressure. The crude material was crystallized from isopropanol (20 mL) to afford 1.04 g (95%) of (S,Z)-methyl 2-(4-(tert-butyl)benzamido)-3-(4-(N′-hydroxycarbamimidoyl)phenyl)propanoate (INT-2) as a white solid. LCMS-ESI (m/z): calcd for: C₂₂H₂₇N₃O₄, 397.2. found 398.1 [M+1]⁺, t_(R)=2.26 min (Method 1). ¹H NMR (400 MHz, DMSO) δ 10.19 (s, 1H), 9.57 (s, 1H), 8.78 (d, J=7.9 Hz, 1H), 7.74 (d, J=8.4 Hz, 2H), 7.58 (d, J=8.2 Hz, 2H), 7.48 (d, J=8.4 Hz, 2H), 7.30 (d, J=8.3 Hz, 2H), 4.79-4.49 (m, 1H), 3.65 (s, 3H), 3.15 (dt, J=13.6, 6.0 Hz, 2H), 1.75 (d, J=13.6 Hz, 1H), 1.29 (s, 9H).

(S)-methyl 2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)-1,2,4-oxadiazol-3-yl)phenyl)propanoate

Prepared using General Procedure 5: To a solution of 4-(heptyloxy)benzoic acid (400.0 mg, 1.54 mmol) in anhydrous DMF (6 mL) were added HOBt (312.3 mg, 2.31 mmol) and EDC (442.75 mg, 2.31 mmol). After stirring for 2 h, (S,Z)-methyl 2-(4-(tert-butyl)benzamido)-3-(4-(N-hydroxycarbamimidoyl)phenyl)-propanoate (INT-2) (673.3 mg, 1.69 mmol) was added. The reaction mixture was stirred at room temperature for 2 h, partitioned between saturated aqueous NaHCO₃ (15 mL) and EA (15 mL), and concentrated under reduced pressure to afford the intermediate (S)-methyl 2-(4-(tert-butyl)benzamido)-3-(4-(N-((4-(heptyloxy)benzoyl)oxy)carbamimidoyl)phenyl)propanoate. The intermediate was dissolved in DMF (10 mL) and heated to 100° C. for 18 h. The reaction mixture was cooled to room temperature and partitioned between EA (10 mL) and saturated aqueous NaHCO₃ (50 mL). The organic layer was extracted with water (2×10 mL) and brine (10 mL). The organic layer was dried over MgSO₄ and concentrated. The brown oil was purified by chromatography (EA/hexanes) to afford 710 mg (77%) of (S)-methyl 2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)-1,2,4-oxadiazol-3-yl)phenyl)propanoate as a white solid. LCMS-ESI (m/z) calculated for C₃₆H₄₃N₃O₅: 597.3; no m/z observed, t_(R)=12.80 min (Method 2). ¹H NMR (400 MHz, DMSO) δ 8.84 (d, J=8.0 Hz, 1H), 8.08 (t, J=17.2 Hz, 2H), 7.97 (dd, J=18.2, 8.5 Hz, 2H), 7.74 (d, J=8.5 Hz, 2H), 7.50 (dd, J=18.6, 8.3 Hz, 4H), 7.18 (d, J=8.9 Hz, 2H), 4.85-4.63 (m, 1H), 4.09 (dd, J=13.8, 7.3 Hz, 2H), 3.67 (s, 3H), 3.24 (ddd, J=23.8, 15.7, 7.3 Hz, 4H), 2.08 (s, 4H), 1.74 (dd, J=14.1, 6.9 Hz, 2H), 1.42 (dd, J=13.6, 6.3 Hz, 2H), 1.30 (d, J=14.5 Hz, 9H), 0.88 (t, J=6.8 Hz, 3H). ¹³C NMR (101 MHz, DMSO) δ 174.05, 170.87, 133.81, 165.14, 161.43, 153.21, 140.51, 129.70, 128.85, 128.78, 126.06, 125.84, 123.93, 123.39, 114.36, 114.25, 66.86, 52.66, 50.88, 34.32, 33.47, 30.06, 29.74, 27.33, 27.24, 24.23, 20.89, 12.80.

(S)-2(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)-1,2,4-oxadiazol-3-yl)phenyl)propanoic acid (Compound 2)

Prepared using General Procedure 4: To a solution of (S)-methyl 2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)-1,2,4-oxadiazol-3-yl)phenyl)propanoate (710.0 mg, 1.19 mmol) in MeOH (20 mL) was added 1 N NaOH (10 mL). The reaction mixture was stirred at 50° C. for 3 h. The resulting mixture was purified by chromatography (DCM/MeOH) to afford 218 mg (31%) of (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)-1,2,4-oxadiazol-3-yl)phenyl) propanoic acid (Compound 2) as white solid. LCMS-ESI (m/z) calculated for C₃₅H₄₁N₃O₅; 583.3; no m/z observed, t_(R)=12.16 min (Method 2). ¹H NMR (400 MHz, DMSO) δ 8.69 (d, J=8.3 Hz, 1H), 8.16-8.02 (m, 2H), 7.98 (d, J=8.3 Hz, 2H), 7.74 (d, J=8.5 Hz, 2H), 7.53 (d, J=8.3 Hz, 2H), 7.47 (d, J=8.5 Hz, 2H), 7.18 (d, J=9.0 Hz, 2H), 4.70 (ddd, J=10.8, 8.4, 4.5 Hz, 1H), 4.09 (t, J=6.5 Hz, 2H), 3.30 (dd, J=13.8, 4.2 Hz, 1H), 3.17 (dd, J=13.8, 10.7 Hz, 1H), 1.74 (dd, J=14.5, 6.7 Hz, 2H) 1.42 (dd, J=13.8, 6.1 Hz, 2H), 1.37-1.14 (m, 14H), 0.87 (t, J=6.9 Hz, 3H). ¹³C NMR (101 MHz, DMSO) δ 175.16, 173.00, 167.96, 166.19, 162.55, 154.18, 142.11, 131.08, 129.95, 129.89, 127.14, 126.92, 125.01, 124.39, 115.49, 115.37, 67.98, 53.72, 36.19, 34.58, 31.19, 30.89, 28.46, 28.37, 25.36, 22.01, 13.92.

Compounds 3-11 and 13-61 were prepared from (S,Z)-methyl 2-(4-(tert-butyl)benzamido)-3-(4-(N′-hydroxycarbamimidoyl)phenyl)propanoate (INT-2) using General Procedures 5 and 4 sequentially.

Compounds 62-66 were prepared from (S,Z)-methyl 2-(4-(tert-butyl)benzamido)-3-(4-(N′-hydroxycarbamimidoyl)phenyl)propanoate (INT-2) using General Procedures 5, 6, and 4 sequentially.

(S)-2-(2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)-1,2,4-oxadiazol-3-yl)phenyl)propanamido)acetic acid (Compound 67)

Prepared using General Procedures 7 and 8: To a solution of (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)-1,2,4-oxadiazol-3-yl)phenyl) propanoic acid (Compound 2) (10.0 mg, 0.017 mmol) in anhydrous DMF (1 mL) was added HOBt (3.52 mg, 0.027 mmol) and EDCI (4.88 mg, 0.027 mmol) at room temperature. After 2 h, tert-butyl 7-aminoacetate (3.49 mg, 0.027 mmol) was added and the reaction mixture stirred at room temperature for 2 h. LCMS analysis showed complete conversion to the intermediate. The reaction mixture was partitioned between NaHCO₃ aqueous (5 ml) and DCM (1 mL), the organic layer was collected and concentrated by vacuum and then was re-dissolved in 1 mL of DCM and 0.1 mL of TFA. The mixture was heated to 30° C. for 3 h. The final compound was purified by HPLC to afford 9.6 mg (88%) of (S)-2-(2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)-1,2,4-oxadiazol-3-yl)phenyl)propanamido)acetic acid (Compound 67). LCMS-ESI (m/z) calculated for C₃₇H₄₄N₄O₆ 640.3; no m/z observed, t_(R)=11.51 min (Method 2). ¹H NMR (400 MHz, DMSO) δ: 8.60 (d, J=8.4 Hz, 1H), 8.47 (t, J=5.7 Hz, 1H), 8.10 (d, J=8.8 Hz, 2H), 7.96 (d, J=8.2 Hz, 2H), 7.75 (d, J=8.4 Hz, 2H), 7.57 (d, J=8.0 Hz, 2H), 7.45 (d, J=8.4 Hz, 2H), 7.17 (d, J=8.8 Hz, 2H), 4.83 (d, J=8.1 Hz, 1H), 4.09 (t, J=6.4 Hz, 2H), 3.94-3.69 (m, 2H), 3.34 (s, 2H), 3.26 (d, J=13.5 Hz, 1H), 3.15-3.01 (m, 1H), 1.83-1.65 (m, 2H), 1.50-1.15 (m, 16H), 0.87 (t, J=6.7 Hz, 3H). ¹³C NMR (101 MHz, DMSO) δ: 175.12, 171.58, 171.13, 167.99, 166.02, 162.54, 154.10, 142.44, 131.16, 130.02, 129.89, 127.23, 126.81, 124.91, 124.25, 115.50, 115.36, 67.97, 54.23, 40.10, 37.12, 34.57, 31.19, 30.88, 28.46, 28.37, 25.36, 22.02, 13.93.

Compound 68 was prepared from (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(piperidin-1-yl)phenyl)-1,2,4-oxadiazol-3-yl)phenyl)propanoic acid (Compound 5) using General Procedures 7, and 8 sequentially.

Compound 69 was prepared from (S,Z)-methyl 2-(4-(tert-butyl)benzamido)-3-(4-(N-hydroxycarbamimidoyl)phenyl)propanoate (INT-2) using General Procedure 7.

Compound 70 was prepared from (S,Z)-methyl 2-(4-(tert-butyl)benzamido)-3-(4-(N-hydroxycarbamimidoyl)phenyl)propanoate (INT-2) using General Procedures 7 and 8 sequentially.

Compounds 71 and 72 were prepared from methyl 2-amino-2-(4-bromophenyl)acetate hydrochloride using General Procedures 7, 1, 2, 5, and 4 sequentially.

Compounds 73 and 74 were prepared from (S)-methyl 2-amino-4-(4-hydroxyphenyl)butanoate hydrobromide using General Procedures 7, 9, 1, 2, 5, and 4 sequentially.

Compound 75 was prepared from (S)-methyl 3-amino-4-(4-hydroxyphenyl)butanoate hydrochloride using General Procedures 7, 9, 1, 2, 5, and 4 sequentially.

4-(heptyloxy)benzohydrazide

To a stirred solution of 4-(heptyloxy)benzoic acid (679 mg, 2.87 mmol) in THF (5 mL) was added 1,1′-carbonyldiimidazole (559 mg, 3.45 mmol). After stirring at room temperature for 2 h, the solution was added to a stirred mixture of hydrazine hydrate (0.729 mL, 5.75 mmol) in THF (2 mL) and stirred a further 2 h. The reaction mixture was poured onto water (20 mL) and stirred for 30 min. The resulting precipitate was collected by filtration, washed with water (2×10 mL) then acetonitrile (3 mL) to afford 0.54 g (71%) of 4-(heptyloxy)benzohydrazide as a white solid. LCMS-ESI (m/z) calculated for C₁₄H₂₂N₂O₂: 250.3 found 251.0 [M+H]⁺, t_(R)=2.05 min. (Method 4).

(S)-methyl 2-(4-(tert-butyl)benzamido)-3-(4-(2-(4-(heptyloxy)benzoyl)hydrazine-carbonyl)phenyl)propanoate (INT-3)

To a stirring solution of (S)-4-(2-(4-(tert-butyl)benzamido)-3-methoxy-3-oxopropyl)benzoic acid (INT-1) (260 mg, 0.68 mmol) in THF (5 mL) were added 4-methylmorpholine (0.15 mL, 1.36 mmol) and isobutyl carbonochloridate (0.09 mL, 0.71 mmol). After stirring at room temperature for 2 h, 4-(heptyloxy)benzohydrazide (187 mg, 0.75 mmol) was added and stirring continued for another 2 h. The reaction mixture was poured onto NaHCO₃ (50 mL) and extracted with DCM (3×20 mL). The combined organics were dried over MgSO₄ and evaporated. The crude product was purified by column chromatography (100% EA in iso-hexanes) to afford 297 mg (71%) of (S)-methyl 2-(4-(tert-butyl)benzamido)-3-(4-(2-(4-(heptyloxy)benzoyl)hydrazinocarbonyl)phenyl)propanoate (INT-3) as an off-white foam. LCMS-ESI (m/z) calculated for C₃₆H₄₅N₃O₆: 615.8 found 616.0 [M+H]⁺, t_(R)=2.89 min. (Method 4).

(S)-methyl 2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)-1,3,4-oxadiazol-2-yl)phenyl)propanoate

To a stirring solution (S)-methyl 2-(4-(tert-butyl)benzamido)-3-(4-(2-(4-(heptyloxy)benzoyl)hydrazinocarbonyl)phenyl)propanoate (INT-3) (127 mg, 0.21 mmol) and TEA (0.09 mL, 0.62 mmol) in DCM (4 mL) was added 2-chloro-1,3-dimethylimidazolidinium chloride (41.8 mg, 0.25 mmol). The reaction mixture was stirred at room temperature for 18 h then warmed to 40° C. for 1 h. The reaction mixture was cooled to room temperature, diluted with NaHCO₃ (15 mL), shaken, split through a hydrophobic frit and evaporated to afford 120 mg (95%) of (S)-methyl 2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)-1,3,4-oxadiazol-2-yl)phenyl)propanoate as a white solid. LCMS-ESI (m/z) calculated for C₃₆H₄₃N₃O₅: 597.8. found 598.0 [M+H]⁺, t_(R)=3.25 min. (Method 4).

Compound 76 was prepared using (S)-methyl 2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)-1,3,4-oxadiazol-2-yl)phenyl)propanoate and General Procedure 4.

2-bromo-1-(4-(heptyloxy)phenyl)ethanone (INT-4)

To a stirring solution of 1-(4-(heptyloxy)phenyl)ethanone (500 mg, 2.13 mmol) in THF (8.5 mL) under nitrogen was added phenyltrimethylammonium tribromide (842 mg, 2.24 mmol). The reaction mixture was stirred at room temperature for 2 h, filtered under vacuum and the captured solid washed with THF. The combined liquors were concentrated to afford 919 mg (100%) of 2-bromo-1-(4-(heptyloxy)phenyl)ethanone (INT-4) as a yellow oil. LCMS-ESI (m/z) calculated for C₁₅H₂₁BrO₂: 313.2. found 313.0 [M+H]⁺, t_(R)=2.12 min. (Method 4).

(S)-2-(4-(heptyloxy)phenyl)-2-oxoethyl 4-(2-(4-tert-butyl)benzamido)-3-methoxy-3-oxopropyl)benzoate

A solution of 2-bromo-1-(4-(heptyloxy)phenyl)ethanone (INT-4) (166 mg, 0.45 mmol) in acetonitrile (1 mL) was added to a solution of (S)-4-(2-(4-(tert-butyl)benzamido)-3-methoxy-3-oxopropyl)benzoic acid (INT-1) (190 mg, 0.50 mmol) and TEA (75.0 μl, 0.54 mmol) in acetonitrile (4 mL). The reaction mixture was stirred at room temperature for 18 h then poured onto 0.5 M citric acid (30 mL) and extracted with EA (3×25 mL). The combined organics were dried over MgSO₄, filtered and concentrated. The residue was triturated with Et₂O (10 mL) and the filtrate concentrated to afford 159 mg (49%) of (S)-2-(4-(heptyloxy)phenyl)-2-oxoethyl 4-(2-(4-(tert-butyl)benzamido)-3-methoxy-3-oxopropyl)benzoate as a white solid. LCMS-ESI (m/z) calculated for C₃₇H₄₅NO₇: 615.8. found 616.0 [M+H]⁺, t_(R)=2.76 min. (Method 4).

(S)-methyl 2-(4-(tert-butyl)benzamido)-3-(4-(4-(4-(heptyloxy)phenyl)oxazol-2-yl)phenyl)propanoate

To boron trifluoride diethyl etherate (33.3 μl, 0.27 mmol) was added a mixture of acetamide (763 mg, 12.9 mmol) and (S)-2-(4-(heptyloxy)phenyl)-2-oxoethyl 4-(2-(4-(tert-butyl)benzamido)-3-methoxy-3-oxopropyl)benzoate (159 mg, 0.26 mmol). The reaction mixture was stirred at 140° C. for 1 h. The reaction mixture was allowed to cool to room temperature, diluted with EA (15 mL) and extracted with NaHCO₃ (3×15 mL) and brine (15 mL). The combined organics were dried over MgSO₄, filtered and concentrated. The residue was recrystallized from Et₂O (5 mL), filtered and rinsed with Et₂O. The filtrate was concentrated to afford 55 mg (16%) of (S)-methyl 2-(4-(tert-butyl)benzamido)-3-(4-(4-(4-(heptyloxy)phenyl)oxazol-2-yl)phenyl)propanoate as an orange oil. LCMS-ESI (m/z) calculated for C₃₇H₄₄N₂O₅: 596.8. found 597.0 [M+H]⁺, t_(R)=3.11 min. (Method 4).

Compound 77 was prepared from (S)-methyl 2-(4-(tert-butyl)benzamido)-3-(4-(4-(4-(heptyloxy)phenyl)oxazol-2-yl)phenyl)propanoate using General Procedure 4.

2-(4-bromophenyl)-2-oxoethyl 4-(heptyloxy)benzoate

To stirring mixture of 4-(heptyloxy)benzoic acid (2.0 g, 8.46 mmol) in acetonitrile (30 mL) at room temperature was added TEA (1.24 mL, 8.87 mmol) drop wise. The reaction mixture was stirred at room temperature for 1 h, poured onto 0.05 M citric acid (100 mL) and EA (10 mL) then stirred for 10 min. The precipitate was isolated by filtration, washed with water (30 mL) and iso-hexanes (2×10 mL) then dried in air to afford 3.8 g (98%) of 2-(4-bromophenyl)-2-oxoethyl 4-(heptyloxy)benzoate. LCMS-ESI (m/z) calculated for C₂₂H₂₅BrO₄: 433.3. found 455.0/457.0 [M+Na]⁺, t_(R)=3.21 min. (Method 4).

4-(4-bromophenyl)-2-(4-(heptyloxy)phenyl)oxazole

To boron trifluoride etherate (0.322 mL, 2.5 mmol) was added 2-(4-bromophenyl)-2-oxoethyl 4-(heptyloxy)benzoate (1.0 g, 2.3 mmol) and acetamide (4.91 g, 83.0 mmol) in DCM (10 mL). The reaction mixture was heated to 50° C. then 140° C. for 16 h, DCM was distilled off. The reaction mixture was cooled, diluted with acetonitrile and stirred at room temperature for 1 h. The precipitate was isolated by filtration to afford 273 mg (23%) of 4-(4-bromophenyl)-2-(4-(heptyloxy)phenyl)oxazole as a brown solid. LCMS-ESI (m/z) calculated for C₂₂H₂₄BrNO₂: 413.1. found 414.0 [M+H]⁺, t_(R)=3.00 min. (Method 4).

(S)-methyl 2-((tert-butoxycarbonyl)amino)-3-(4-(2-(4-(heptyloxy)phenyl)oxazol-4-yl)phenyl)propanoate

To zinc (104 mg, 1.59 mmol) stirring in DMF (1.5 mL) was added iodine (20.2 mg, 0.08 mmol). After the color disappeared, (R)-methyl 2-((tert-butoxycarbonyl)amino)-3-iodopropanoate (175 mg, 0.53 mmol) and further iodine (20.2 mg, 0.08 mmol) were added. After 30 min, the mixture was de-gassed by bubbling through N₂ then treated with 4-(4-bromophenyl)-2-(4-(heptyloxy)phenyl)oxazole (220 mg, 0.53 mmol), Pd₇dba₃ (12.2 mg, 0.01 mmol) and dicyclohexyl(2′,6′-dimethoxy-[1,1′-biphenyl]-2-yl)phosphine (10.9 mg, 0.03 mmol) followed by THF (1 mL). The reaction mixture was heated to 50° C. for 2 h, cooled to room temperature and purified by column chromatography (gradient of 15-95% EA in iso-hexanes) to afford 188 mg (65%) of (S)-methyl 2-((tert-butoxycarbonyl)amino)-3-(4-(2-(4-(heptyloxy)phenyl)oxazol-4-yl)phenyl)propanoate. LCMS-ESI (m/z) calculated for C₃₁H₄₀N₂O₆: 536.6. found 537.0 [M+H]⁺, t_(R)=3.72 min. (Method 11).

Compound 78 was prepared from (S)-methyl 2-((tert-butoxycarbonyl)amino)-3-(4-(2-(4-(heptyloxy)phenyl)oxazol-4-yl)phenyl)propanoate and 4-(tert-butyl)benzoic acid using General Procedures 8, 7 then 4.

2-(4-bromophenyl)-4-(4-(heptyloxy)phenyl)thiazole

To a stirring solution of 2-bromo-1-(4-(heptyloxy)phenyl)ethanone (INT-4) (1.37 g, 4.38 mmol) in EtOH (10 mL) were added 4-bromobenzothioamide (0.95 g, 4.38 mmol) and isopropanol (10 mL). The reaction mixture was stirred at room temperature for 16 h. The solid was isolated by filtration, washed with EtOH (5 mL) then taken up in DCM (10 mL) and NaHCO₃ (20 mL) and stirred for 1 h at room temperature. The solid was isolated by filtration, washed with water (2×10 mL) and acetonitrile (2×4 mL) then dried to afford 1.02 g (52%) of 2-(4-bromophenyl)-4-(4-(heptyloxy)phenyl)thiazole as a white micro-crystalline solid. LCMS-ESI (m/z) calculated for C₂₂H₂₄BrNO_(S): 429.1. found 430.0 [M+H]⁺, t_(R)=3.20 min. (Method 4).

(S)-methyl 2-((tert-butoxycarbonyl)amino)-3-(4-(4-(4-(heptyloxy)phenyl)thiazol-2-yl)phenyl)propanoate

To a stirring suspension of zinc (228 mg, 3.49 mmol) in DMF (2 mL) was added diiodine (44 mg, 0.17 mmol). When the color was discharged, (R)-methyl 2-((tert-butoxycarbonyl)amino)-3-iodopropanoate (382 mg, 1.16 mmol) and further diiodine (44.2 mg, 0.17 mmol) were added. After stirring at room temperature for 30 min, the reaction mixture was de-gassed by bubbling through N₂ then 2-(4-bromophenyl)-4-(4-(heptyloxy)phenyl)thiazole (500 mg, 1.16 mmol), dicyclohexyl(2′,6′-dimethoxy-[1,1′-biphenyl]-2-yl)phosphine (23.8 mg, 0.06 mmol), Pd₂dba₃ (26 mg, 0.03 mmol) and DMF (2 mL) were added. The reaction mixture was heated to 50° C. for 3 h, cooled and purified by column chromatography (10-80% EA in iso-hexanes) to afford 620 mg (96%) of (S)-methyl 2-((tert-butoxycarbonyl)amino)-3-(4-(4-(4-(heptyloxy)phenyl) thiazol-2-yl)phenylpropanoate. LCMS-ESI (m/z) calculated for C₃₁H₄₀N₂O₅S: 552.3; no ion observed, t_(R)=3.37 min. (Method 4).

Compound 79 was prepared from (S)-methyl 2-((tert-butoxycarbonyl)amino)-3-(4-(4-(4-(heptyloxy)phenyl) thiazol-2-yl) phenyl propanoate and 4-(tert-butyl)benzoic acid using General Procedures 8, 7 then 4.

4-(heptyloxy)benzothioamide

To stirring suspension of 4-(heptyloxy)benzamide (1.24 g, 5.29 mmol) in DME (20 mL) and THF (10 mL) was added 2,4-bis(4-phenoxyphenyl)-1,3,2,4-dithiadiphosphetane 2,4-disulfide (2.80 g, 5.29 mmol). The reaction mixture was stirred at room temperature for 16 h. The reaction mixture was concentrated onto silica and purified by column chromatography (0-60% EA in iso-hexanes) to afford 1.4 g (62%) of 4-(heptyloxy)benzothioamide as a yellow waxy solid. LCMS-ESI (m/z) calculated for C₁₄H₂₁NOS: 251.4. found 252.0 [M+H]⁺, t_(R)=3.13 min. (Method 6).

4-(4-bromophenyl)-2-(4-(heptyloxy)phenyl)thiazole

To a stirring mixture of 4-(heptyloxy)benzothioamide (1.30 g, 5.17 mmol) in isopropanol (20 mL) was added 2-bronco-1-(4-bromophenyl)ethanone (1.44 g, 5.17 mmol). The precipitate was collected by filtration and washed with EtOH (2×5 mL). The filter cake was slurried with NaHCO₃ (2×20 mL), water (2×20 mL) then EtOH (2×5 mL) and dried to afford 926 mg (41%) of 4-(4-bromophenyl)-2-(4-(heptyloxy)phenyl)thiazole as a pale yellow powder. LCMS-ESI (m/z) calculated for C₂₂H₂₄BrNOS: 429.1. found 430.0 [M+H]⁺, t_(R)=3.41 min. (Method 4).

(S)-methyl 2-((tert-butoxycarbonyl)amino)-3-(4-(2-(4-(heptyloxy)phenyl)thiazol-4-yl)phenyl)propanoate

To a stirring mixture of zinc (182 mg, 2.79 mmol) in DMF (2 mL) was added diiodine (35.4 mg, 0.14 mmol). When the color was discharged, further diiodine (35.4 mg, 0.14 mmol) and (R)-methyl 2-((tert-butoxycarbonyl)amino)-3-iodopropanoate (306 mg, 0.93 mmol) were added. After 30 min, DMF (1 mL) was added and the mixture de-gassed by bubbling through N₂. To the reaction mixture were added 4-(4-bromophenyl)-2-(4-(heptyloxy)phenyl)thiazole (400 mg, 0.93 mmol), Pd₂dba₃ (21 mg, 0.02 mmol) and dicyclohexyl(2′,6′-dimethoxy-[1,1′-biphenyl]-2-yl)phosphine (19 mg, 0.05 mmol), the mixture was further de-gassed then heated to 50° C. for 3 h. The reaction mixture was cooled and purified by column chromatography (10-80% EA in iso-hexanes). The product obtained was taken into DCM (4 mL) and washed with water (20 mL) and dried through a hydrophobic frit. The organics were suspended in ACN (4 mL) and concentrated to afford 432 mg (83%) of (S)-methyl 2-((tert-butoxycarbonyl)amino)-3-(4-(2-(4-(heptyloxy)phenyl)thiazol-4-yl)phenyl)propanoate as a yellow foam. LCMS-ESI (m/z) calculated for C₃₁H₄₀N₂O₅S: 552.7; no ion observed, t_(R)=3.36 min. (Method 4).

Compound 80 was prepared from (S)-methyl 2-((tert-butoxycarbonyl)amino)-3-(4-(2-(4-(heptyloxy)phenyl)thiazol-4-yl)phenyl)propanoate and 4-(tert-butyl)benzoic acid using General Procedures 8, 7 then 4.

4-(5-(4-(heptyloxy)phenyl)thiazol-2-yl)benzaldehyde

To a stirring suspension of 4-(thiazol-2-yl)benzaldehyde (349 mg, 1.84 mmol), tricyclohexylphosphine (27 mg, 0.07 mmol), pivalic acid (64.2 μl, 0.55 mmol), potassium carbonate (382 mg, 2.77 mmol) and palladium (II) acetate (8 mg, 0.04 mmol) in DMA (5.15 mL) under nitrogen was added a solution of 1-bromo-4-(heptyloxy)benzene (500 mg, 1.84 mmol) in DMA (1 mL). The reaction mixture was evacuated and purged with nitrogen 3 times then heated at 100° C. for 6 h. Once cooled, the reaction mixture was diluted with EA (40 mL), washed with water (3×40 mL) and brine (40 mL). The organic phase was dried over MgSO₄, filtered and concentrated in vacuo to afford a brown-green solid. The crude product was purified by chromatography (0-50% EA in hexanes) to afford 270 mg (37%) of 4-(5-(4-(heptyloxy)phenyl)thiazol-2-yl)benzaldehyde as an iridescent yellow solid. LCMS-ESI (m/z) calculated for C₂₃H₂₅NO₂S: 379.5. found 380.0 [M+H]⁺, t_(R)=2.99 min. (Method 8).

methyl 2-((tert-butoxycarbonyl)amino)-3-(4-(5-(4-(heptyloxy)phenyl)thiazol-2-yl)phenyl) acrylate

A stirring mixture of 1,1,3,3-tetramethylguanidine (86 μl, 0.69 mmol) was added to a suspension of 4-(5-(4-(heptyloxy)phenyl)thiazol-2-yl)benzaldehyde (260 mg, 0.685 mmol) and methyl 2-((tert-butoxycarbonyl)amino)-2-(dimethoxyphosphoryl)acetate (185 mg, 0.62 mmol) in anhydrous THF (10 mL) under nitrogen, at −70° C. The reaction mixture was stirred at −70° C. for 1 h then at room temperature for 18 h. The reaction mixture was diluted with DCM (50 mL), washed with water (50 mL), passed through a phase separation cartridge and the organic phase concentrated in vacuo to afford a yellow solid. The solid was triturated with EA/EtOH (20 mL) and the collected solid washed with EtOH (10 mL) and Et₂O to afford 284 mg (79%) of methyl 2-((tert-butoxycarbonyl)amino)-3-(4-(5-(4-(heptyloxy)phenyl)thiazol-2-yl)phenyl) acrylate as a yellow solid. LCMS-ESI (m/z) calculated for C₃₁H₃₈N₂O₅S: 550.7. found 551.0 [M+H]⁺, t_(R)=3.11 min. (Method 8).

methyl 2-((tert-butoxycarbonyl)amino)-3-(4-(5-(4-(heptyloxy)phenyl)thiazol-2-yl)phenyl) propanoate

A stirring mixture of methyl 2-((tert-butoxycarbonyl)amino)-3-(4-(5-(4-(heptyloxy)phenyl)thiazol-2-yl)phenyl)acrylate (50 mg, 0.091 mmol) dissolved in dioxane (5 mL) was hydrogenated using an H-Cube hydrogenator (10% Pd/C, 30×4 mm, full hydrogen, 40° C. 1 mL/min). The reaction mixture was concentrated in vacuo to afford 21 mg (29%) of methyl 2-((tert-butoxycarbonyl)amino)-3-(4-(5-(4-(heptyloxy)phenyl)thiazol-2-yl)phenyl)propanoate as a yellow solid. LCMS-ESI (m/z) calculated for C₃₁H₄₀N₂O₅S: 552.7. found 553.0 [M+H]⁺, t_(R)=1.85 min. (Method 8).

Compound 81 was prepared from methyl 2-((tert-butoxycarbonyl)amino)-3-(4-(5-(4-(heptyloxy)phenyl)thiazol-2-yl)phenyl)propanoate and 4-(tert-butyl)benzoyl chloride using General Procedures 8, 3 then 4.

Compound 82 was prepared in a similar fashion to 2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)thiazol-2-yl)phenyl)propanoic acid (Compound 81) using 4-(2-(4-(heptyloxy)phenyl)thiazol-5-yl)benzaldehyde in place of 4-(5-(4-(heptyloxy)phenyl)thiazol-2-yl) benzaldehyde.

(S)-methyl 2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl-1,3,4-thiadiazol-2-yl)phenyl)propanoate

Prepared using INT-3: To a stirring solution of 2,4-bis(4-methoxyphenyl)-1,3,2,4-dithiadiphosphetane 2,4-disulfide (65.7 mg, 0.16 mmol) in THF (3 mL) was added (S)-methyl 2-(4-(tert-butyl)benzamido)-3-(4-(2-(4-(heptyloxy)benzoyl)hydrazinocarbonyl)phenyl)propanoate (INT-3) (100.0 mg, 0.16 mmol) and the mixture heated to 65° C. After 1 h, the reaction mixture was concentrated and purified by column chromatography (10-100% EA in iso-hexanes) to afford 37.0 mg (29%) of (S)-methyl 2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)-1,3,4-thiadiazol-2-yl)phenyl)propanoate as a yellow solid. LCMS-ESI (m/z) calculated for C₃₆H₄₃N₃O₄S: 613.8: no ion observed, t_(R)=3.31 min. (Method 4).

Compound 83 was prepared from (S)-methyl 2-(4-(tert-butyl)benzamide)-3-(4-(5-(4-(heptyloxy)phenyl)-1,3,4-thiadiazol-2-yl)phenyl)propanoate using General Procedure 4.

Compound 84 was prepared using 3-bromo-5-chloro-1,2,4-thiadiazole, (4-(heptyloxy)phenyl)boronic acid and tert-butyl (S)-2-(4-(tert-butyl)benzamido)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propanoate (INT-13) using General Procedures 10, 10, and 8 sequentially.

(S)-tert-butyl 2-(((benzyloxy)carbonyl)amino)-3-(4-(((trifluoromethyl)sulfonyl)-oxy)-phenyl) propanoate (INT-5)

Prepared using General Procedure 9: A stirred solution of (S)-tert-butyl 2-(((benzyloxy)carbonyl)amino)-3-(4-hydroxyphenyl)propanoate hydrate (25 g, 64.2 mmol) in DCM (100 mL) was treated with MgSO₄ (4.01 g, 33.7 mmol). After 15 min, the mixture was filtered and washed with DCM (2×20 mL). The organics were treated with N-ethyl-N-isopropylpropan-2-amine (17.41 g, 134.7 mmol) and stirred. This solution was treated with 1,1,1-trifluoro-N-phenyl-N-((trifluoromethyl)sulfonyl)methanesulfonamide (26.44 g, 74.01 mmol) and the mixture was allowed to stir overnight at room temperature. The mixture was treated with water (50 mL) and saturated aqueous NaHCO₃ (20 mL) and stirred vigorously for 10 min. The layers were separated and the organic layer was further washed with saturated aqueous NaHCO₃ (2×50 mL), water (50 mL), and saturated aqueous NaHCO₃ (50 mL) and concentrated. The compound was purified by chromatography (EA/hexanes) to afford 26.85 g (79%) of (S)-tert-butyl 2-(((benzyloxy)carbonyl)amino)-3-(4-(((trifluoromethyl)sulfonyl)oxy)phenyl) propanoate (INT-5). LCMS-ESI (n/z) calculated for C₂₂H₂₄F₃NO₇S: 503.1. found 526.1 [M+Na]⁺, t_(R)=4.12 min (Method 3).

(S)-tert-butyl 2-(((benzyloxy)carbonyl)amino)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propanoate (INT-6)

A solution of (S)-tert-butyl 2-(((benzyloxy) carbonyl)amino)-3-(4-(((trifluoromethyl)sulfonyl)oxy)phenyl)propanoate (INT-5) (26.85 g, 53.4 mmol), potassium acetate (15.71 g, 160.1 mmol), bis-pinacolatoborane (27.1 g, 106.7 mmol) and DMSO (100 mL) was degassed with a steady flow of nitrogen gas for 5 minutes. To this solution was added PdCl₂(dppf) (1.95 g, 2.67 mmol) and the solution further degassed and kept under an atmosphere of nitrogen. The mixture was heated at 100° C. for 18 h then cooled to room temperature and diluted with EA (50 mL) and washed with saturated aqueous NaHCO₃ (20 mL), water (3×30 mL), dried over MgSO₄, filtered, and the solvent removed under reduced pressure. The compound was purified by column chromatography to give 11.10 g (41%) of (S)-tert-butyl 2-(((benzyloxy)carbonyl)amino)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propanoate (INT-6) as an oil. LCMS-ESI (m/z) calculated for C₂₇H₃₆BNO₆: 481.3. found 504.3 [M+Na]⁺, t_(R)=4.21 min (Method 3). ¹H NMR (400 MHz, DMSO) δ 7.72 (d, J=8.3 Hz, 1H), 7.60 (d, J=8.0 Hz, 2H), 7.42-7.11 (m, 6H), 4.98 (s, 2H), 4.22-4.08 (m, 1H), 3.03 (dd, J=13.7, 5.2 Hz, 1H), 2.85 (dd, J=13.6, 10.1 Hz, 1H), 1.36 (s, 6H), 1.30 (s, 9H). 1.22-1.13 (m, 6H).

(S)-tert-butyl 2-(((benzyloxy)carbonyl)amino)-3-(4-(5-bromopyrimidin-2-yl)-phenyl) propanoate (INT-7)

Prepared using General Procedure 10: A stirred mixture of (S)-tert-butyl 2-(((benzyloxy)carbonyl)amino)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl) propanoate (INT-6) (21.7 g, 45.0 mmol) and 5-bromo-2-iodopyrimidine (15.4 g, 54.0 mmol) in dioxane (400 mL) with sodium carbonate decahydrate (25.7 g, 90 mmol) in water (100 mL) was de-gassed. PdCl₂(dppf) (0.99 g, 1.4 mmol) was added and the mixture further de-gassed then heated to reflux for 5 h. The mixture was allowed to cool while stirring overnight. The mixture was poured onto water (1 L) and EA (300 mL) and stirred for 30 min. The mixture was filtered and the layers were separated. The aqueous layer was further extracted with EA (2×200 mL) and the combined organic layers were washed with water (2×100 mL) then brine (50 mL), dried over MgSO₄ and concentrated. Column chromatography (EA/hexanes) gave 14.84 g (63%) of (S)-tert-butyl 2-(((benzyloxy)carbonyl)amino)-3-(4-(5-bromopyrimidin-2-yl)phenyl) propanoate (INT-7). LCMS-ESI (m/z) calculated for C₂₅H₂₆BrN₃O₄: 511.1. found 534.0 [M+Na]⁺, t_(R)=2.97 min (Method 11).

(S)-tert-butyl 2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-(heptyloxy)phenyl)-pyrimidin-2-yl)phenyl)propanoate (INT-8)

Prepared using General Procedure 10: A stirred solution of (S)-tert-butyl 2-(((benzyloxy)carbonyl)amino)-3-(4-(5-bromopyrimidin-2-yl)phenyl)propanoate (INT-7) (759 mg, 1.48 mmol), (4-(heptyloxy)phenyl)boronic acid (455 mg, 1.93 mmol) and sodium bicarbonate (311 mg, 3.70 mmol) in acetonitrile (5 ml), THF (5 ml), and water (4 ml) was degassed with N₂ for 5 min. Pd(dppf)Cl₂ (108 mg, 0.15 mmol) was added and the reaction was heated to 110° C. in the microwave for 50 min. The reaction was diluted with EA and water then filtered. The organic phase was dried over MgSO4, filtered, and concentrated. The crude product was purified by chromatography on silica gel (EA/hexanes) to afford 591 mg (62%) of (S)-tert-butyl 2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoate (INT-8) as a yellow solid. LCMS-ESI (n/z) calculated for C₃₈H₄₅N₃O₅: 623.8; no m/z observed, t_(R)=3.42 min (Method 8).

(S)-tert-butyl 2-amino-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl) propanoate (INT-9)

To a stirred solution of (S)-tert-butyl 2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl) propanoate (INT-8) (591 mg, 0.95 mmol) in EA (25 ml) was added Pd/C (101 mg, 0.09 mmol) and the suspension degassed with H₂. The mixture was stirred vigorously under an atmosphere of H₂ overnight then filtered through celite and the filtrate was concentrated to give 405 mg (83%) of (S)-tert-butyl 2-amino-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoate (INT-9). LCMS-ESI (m/z) calculated for C₃₀H₃₉N₃O₃: 489.3; found: 490.2 [M+H]⁺, t_(R)=2.35 min (Method 8).

(S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)-phenyl)propanoic acid (Compound 85)

A stirred solution of (S)-tert-butyl 2-amino-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoate (INT-9) (1.34 g, 2.74 mmol) and 4-(tert-butyl)benzoic acid (0.54 g, 3.01 mmol) in DMF (5 mL) and N-ethyl-N-isopropylpropan-2-amine (1.01 ml, 5.47 mmol) was treated with HATU (1.09 g, 2.87 mmol). After stirring for 1 h, the mixture was treated with water (60 mL) and iso-hexanes (20 mL) and stirred for 1 h. The product was collected by filtration, washed with water (3×10 mL) then iso-hexanes (10 mL) and dried in the vacuum oven. The ester was taken up in DCM (5 mL) and treated with TFA (5 mL). After 2 h, the mixture was treated with toluene (5 mL) and evaporated. The residue was taken up in DMSO (6 mL) then treated with water (20 mL) and stirred for 1 h. The product was collected by filtration, washed with water (3×15 mL) then acetonitrile (2×5 mL), and dried in the vacuum oven to give 1.40 g (85%) of (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 85) as a white solid. LCMS-ESI (m/z) calculated for C₃₇H₄₃N₃O₄; 593.3. found: 594.0 [M+H]⁺, t_(R)=11.18 min (Method 9) and 97% e.e. (Chiral Method). ¹H NMR (400 MHz, DMSO-d6) δ 12.79 (br, s, 1H), 9.16 (s, 2H), 8.66 (d, J=8.2 Hz, 1H), 8.45-8.27 (m, 2H), 7.89-7.69 (m, 4H), 7.57-7.38 (m, 4H), 7.18-7.02 (m, 2H), 4.77-4.62 (m, 1H), 4.03 (t, J=6.5 Hz, 2H), 3.30-3.24 (m, 1H), 3.22-3.12 (m, 1H), 1.80-1.68 (m, 2H), 1.48-1.20 (m, 17H), 0.96-0.82 (m, 3H).

Compounds 86-102, 104-158 and 296 were prepared from (S)-tert-butyl 2-amino-3-(4-(5-(4-(heptyloxy) phenyl) pyrimidin-2-yl)phenyl)propanoate (INT-8) using General Procedures 3 or 7 followed by 4 or 8.

(S)-tert-butyl 2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-(tert-butyl)phenyl)-pyrimidin-2-yl) phenyl)propanoate (INT-10)

Prepared using General Procedure 10: A stirred solution of (S)-tert-butyl 2-(((benzyloxy)carbonyl)amino)-3-(4-(5-bromopyrimidin-2-yl)phenyl)propanoate (INT-7) (0.96 g, 1.86 mmol), (4-(tert-butyl)phenyl)boronic acid (0.43 g, 2.42 mmol) and sodium bicarbonate (0.39 g, 4.66 mmol) in acetonitrile (5 ml), THF (5 ml) and water (5 ml) was degassed with N₂ for 5 min. Pd(dppf)Cl₂ (0.136 g, 0.186 mmol) was added and the reaction was heated to 110° C. in the microwave for 45 min. The reaction was diluted with EA (50 mL) and filtered over celite. The organic phase was washed with water (100 mL) and concentrated. The crude product was purified by chromatography on silica gel (EA/isohexanes) to afford 757 mg (70%) of (S)-tert-butyl 2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-(tert-butyl)phenyl)pyrimidin-2-yl)phenyl)propanoate (INT-10) as a white powder. LCMS-ESI (m/z) calculated for C₃₅H₃₉N₃O₄: 565.3; no m/z observed, t_(R)=3.39 min (Method 8).

(S)-tert-butyl 2-amino-3-(4-(5-(4-(tert-butyl)phenyl)pyrimidin-2-yl)phenyl)-propanoate (INT-11)

To a stirred solution of (S)-tert-butyl 2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-(tert-butyl)phenyl)pyrimidin-2-yl)phenyl)propanoate (INT-10) (757 mg, 1.34 mmol) in EA (100 ml) was added Pd/C (142 mg, 0.13 mmol) and the suspension degassed with H₂. The mixture was stirred vigorously under an atmosphere of H₂ overnight then filtered through celite and the filtrate was concentrated to give 532 mg (88%) of (S)-tert-butyl 2-amino-3-(4-(5-(4-(tert-butyl)phenyl)pyrimidin-2-yl)phenyl)propanoate (INT-11). LCMS-ESI (m/z) calculated for C₂₇H₃₃N₃O₂: 431.3; found: 432.0 [M+H]⁺, t_(R)=2.01 min (Method 4).

Compounds 159-181 were prepared from (S)-tert-butyl 2-amino-3-(4-(5-(4-(tert-butyl) phenyl)pyrimidin-2-yl)phenyl)propanoate (INT-11) using General Procedures 3 or 7 followed by 4 or 8.

Compound 182 was prepared in a manner analogous to (S)-3-(4-(5-(4-(tert-butyl)phenyl)pyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoic acid (Compound 165) starting from (R)-tert-butyl 2-(((benzyloxy)carbonyl)amino)-3-(4-hydroxyphenyl)propanoate.

Compound 183 was prepared from (S)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)-2-(4-hydroxybenzamido)propanoic acid (Compound 114) using General Procedure 13.

Compounds 184-190 were prepared from (S)-tert-butyl 2-amino-3-(4-(5-(4-(heptyloxy) phenyl)pyrimidin-2-yl)phenyl)propanoate (INT-9) using General Procedures 3 and 8 sequentially.

Compound 191 was prepared in a manner analogous to (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 85) starting from (R)-tert-butyl 2-(((benzyloxy)carbonyl)amino)-3-(4-hydroxyphenyl)propanoate.

(S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)-pyrimidin-2-yl)phenyl)propanoic acid (Compound 192)

A stirring solution of (S)-tert-butyl 2-amino-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoate (INT-9) (5.50 g, 11.23 mmol) and 5-(tert-butyl)thiophene-2-carboxylic acid (2.13 g, 11.57 mmol) in DMF (50 mL) and DIEA (6.22 ml, 33.70 mmol) was treated portion wise with HATU (4.48 g, 11.79 mmol). After stirring for 1 h, the mixture was treated with water (200 mL) and iso-hexanes (20 mL) and stirred for 10 min. The product was collected by filtration, washed with iso-hexanes (2×30 mL), water (2×50 mL) then MeOH (20 mL) and iso-hexanes (30 mL). The ester was taken up in DCM (50 mL) and treated with TFA (10 mL) After 1 h, additional TFA (15 mL) was added. After a further 5 h, the mixture was treated with toluene (20 mL) and concentrated. The residue was washed with acetonitrile (25 mL) then taken up in DMSO (20 mL) then treated with water (100 mL) and stirred for 1 h. The product was collected by filtration, washed with water (4×50 mL) then acetonitrile (3×30 mL), and dried in a vacuum oven to give 5.30 g (75%) of (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy) phenyl)pyrimidin-2-yl)phenyl) propanoic acid (Compound 192) as an off-white solid. LCMS-ESI (m/z) calculated for C₃₅H₄₁N₃O₄S: 599.3; no m/z observed, t_(R)=11.10 min (Method 10). The chiral purity was 98% e.e. (Chiral Method). ¹H NMR (400 MHz, DMSO-d6) δ 12.87 (s, 1H), 9.17 (s, 2H), 8.68 (d, J=8.3 Hz, 1H), 8.47-8.17 (m, 2H), 7.96-7.71 (m, 2H), 7.64 (d, J=3.8 Hz, 1H), 7.55-7.29 (m, 2H), 7.26-7.02 (m, 2H), 6.93 (d, J=3.8 Hz, 1H), 4.79-4.48 (m, 1H), 4.03 (t, J=6.5 Hz, 2H), 3.27 (dd, J=13.9, 4.5 Hz, 1H), 3.12 (dd, J=13.9, 10.6 Hz, 1H), 1.90-1.58 (m, 2H), 1.58-1.01 (m, 17H), 1.01-0.69 (m, 3H).

Compound 193 was prepared in a manner analogous to (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy) phenyl)pyrimidin-2-yl) phenyl) propanoic acid (Compound 192) starting from (R)-tert-butyl 2-(((benzyloxy)carbonyl)amino)-3-(4-hydroxyphenyl)propanoate.

tert-butyl (4-(tert-butyl)benzoyl)-L-tyrosinate

Prepared using General Procedure 7. Into a solution of 4-(tert-butyl)benzoic acid (8.3 g, 46.4 mmol) in DMF (100 mL) were added HATU (19.2 g, 50.6 mmol), TEA (17.6 mL, 126.4 mmol) and (S)-tert-butyl 2-amino-3-(4-hydroxyphenyl)propanoate (10.0 g, 42.1 mmol). After 5 h, the reaction mixture was diluted with EA, washed with saturated aqueous NaHCO₃ and brine, then dried (Na₂SO₄), concentrated, and purified by chromatography (EA/hexanes) to provide 12.9 g (69%) of tert-butyl (4-(tert-butyl)benzoyl)-L-tyrosinate. LCMS-ESI (m/z) calculated for C₂₄H₃₁NO₄: 397.5; no m/z observed, t_(R)=3.59 min (Method 1). ¹H NMR (400 MHz, CDCl₃) δ 7.71-7.65 (m, 2H), 7.47-7.39 (m, 2H), 7.04 (t, J=5.7 Hz, 2H), 6.78-6.70 (m, 2H), 6.59 (d, J=7.5 Hz, 1H), 4.91 (dt, J=7.5, 5.6 Hz, 1H), 3.15 (qd, J=14.0, 5.6 Hz, 2H), 1.45 (s, 9H), 1.33 (s, 9H).

tert-butyl (S)-2-(4-(tert-butyl)benzamido)-3-(4-(((trifluoromethyl)sulfonyl)oxy) phenylpropanoate (INT-12)

Prepared using General Procedure 9. Into a solution of tert-butyl (4-(tert-butyl)benzoyl)-L-tyrosinate (8.0 g, 17.9 mmol) were added DIEA (3.7 mL, 1.2 mmol) and N-Phenyl bis(trifluoromethanesulfonimide) (7.0 g, 19.7 mmol). After stirring for 36 h, the reaction mixture was diluted with DCM then washed with 10% aqueous citric acid and saturated aqueous NaHCO₃. The organic layer was dried over Na₂SO₄, and concentrated to provide 9.5 g (100° 40 tert-butyl (S)-2-(4-(tert-butyl)benzamido)-3-(4-(((trifluoromethyl)sulfonyl)oxy) phenyl)propanoate (INT-12), which was used without further purification. LCMS-ESI (m/z) calculated for C₂₅H₃₀F₃NO₆S: 529.6; no m/z observed, t_(R)=4.42 min (Method 1). ¹H NMR (400 MHz, CDCl₃) δ 7.71-7.65 (m, 2H), 7.49-7.43 (m, 2H), 7.32-7.26 (m, 2H), 7.22-7.16 (m, 2H), 6.69 (d, J=7.0 Hz, 1H), 4.94 (dt, J=6.9, 5.9 Hz, 1H), 3.24 (t, J=7.1 Hz, 2H), 1.41 (s, 9H), 1.33 (s, 9H).

tert-butyl (S)-2-(4-(tert-butyl)benzamido)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propanoate (INT-13)

Into a degassed solution of (S)-2-(4-(tert-butyl)benzamido)-3-(4-(((trifluoromethyl)sulfonyl)oxy) phenyl)propanoate (INT-12) (9.5 g, 24 mmol), KOAc (7.0 g, 72 mmol), and bis-pinacolatoborane (9.1 g, 36 mmol) in DMSO (20 mL) was added Pd(dppf)Cl₂ (0.87 g, 1 mmol). The reaction mixture was heated at 100° C. for 12 h under an atmosphere of N₂. The reaction mixture was diluted with EA then washed with saturated aqueous NaHCO₃ and H₂O. The organic layer was dried over Na₂SO₄, concentrated, and purified by chromatography (EA/hexanes) to provide 7.2 g (60%) of tert-butyl (S)-2-(4-(tert-butyl)benzamido)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propanoate (INT-13). LCMS-ESI (m/z) calculated for C₃₀H₄₂BNO₅: 507.5; no m/z observed, t_(R)=4.53 min (Method 1). ¹H NMR (400 MHz, CDCl₃) δ 7.74 (d, J=8.0 Hz, 2H), 7.72-7.67 (m, 2H), 7.48-7.43 (m, 2H), 7.21 (d, J=8.0 Hz, 2H), 6.59 (d, J=7.4 Hz, 1H), 5.05-4.92 (m, 1H), 3.27 (qd, J=13.7, 5.4 Hz, 2H), 1.47 (s, 9H), 1.36 (m, 21H).

tert-butyl (S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(4-(tert-butyl)benzamido)propanoate (INT-14)

Prepared using General Procedure 10. Into a degassed solution of (S)-2-(4-(tert-butyl)benzamido)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propanoate (INT-13) (1.0 g, 2.0 mmol), NaHCO₃ (420 mg, 3.9 mmol), and 5-bromo-2-iodopyrimidine (615 mg, 2.2 mmol) in 2/2/1 ACN/THF/H₂O was added Pd(dppf)Cl₂ (140 mg, 0.2 mmol). The reaction mixture was heated at 110° C. for 1 h in a microwave reactor. The reaction mixture was concentrated, dissolved in DCM and washed with H₂O. The organic layer was dried over Na₂SO₄, concentrated, and purified by chromatography EA/hexanes) to provide 630 mg (58%) of tert-butyl (S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(4-(tert-butyl)benzamido)propanoate (INT-14). LCMS-ESI (m/z) calculated for C₂₈H₃₂BrN₄O₃: 538.5: no m/z observed, t_(R)=4.66 min (Method 1). ¹H NMR (400 MHz, CDCl₃) δ 8.84-8.78 (s, 2H), 8.31 (t, J=7.0 Hz, 2H), 7.75-7.64 (m, 2H), 7.46-7.38 (m, 2H), 7.30 (dd, J=12.9, 7.1 Hz, 2H), 6.65 (d, J=7.2 Hz, 1H), 5.10-4.94 (m, 1H), 3.43-3.20 (m, 2H), 1.45 (s, 9H), 1.32 (s, 9H).

Compounds 194-236 were prepared from tert-butyl (S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(4-(tert-butyl)benzamido)propanoate (INT-14) using General Procedures 10 and 8 sequentially.

tert-butyl (5-(tert-butyl)thiophene-2-carbonyl)-L-tyrosinate

Prepared using General Procedure 7. Into a solution of 5-(tert-butyl)thiophene-2-carboxylic acid (1.93 g, 10.0 mmol) in DMF (20 mL) were added HATU (4.56 g, 12.0 mmol) and TEA (4.18 mL, 30.0 mmol). The mixture was stirred at room temperature for 30 min and (S)-tert-butyl 2-amino-3-(4-hydroxyphenyl)propanoate (2.37 g, 10.0 mmol) was added. After 1 h, the reaction mixture was poured into 400 mL of ice-water and the solid was filtered. The solid was dissolved in DCM and EA, dried over MgSO₄, concentrated, and purified by chromatography (EA/hexanes) to provide 3.6 g (89%) of tert-butyl (5-(tert-butyl)thiophene-2-carbonyl)-L-tyrosinate. LCMS-ESI (m/z) calculated for C₂₂H₂₉NO₄S: 403.2. found: 426.1 [M+Na]⁺, t_(R)=9.07 min (Method 2).

tert-butyl (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(((trifluoromethyl)sulfonyl) oxy) phenyl) propanoate (INT-15)

Prepared using General Procedure 9. Into a solution of tert-butyl (5-(tert-butyl)thiophene-2-carbonyl)-L-tyrosinate (3.52 g, 8.72 mmol) were added DIEA (4.56 mL, 26.17 mmol) and N-phenyl bis(trifluoromethanesulfonimide) (3.27 g, 9.16 mmol). After stirring for 18 h, the reaction mixture was diluted with DCM then washed with saturated aqueous NaHCO₃. The organic layer was dried over MgSO₄ and concentrated. The crude product was purified by chromatography to provide 4.10 g (87.6%) of tert-butyl (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(((trifluoromethyl)sulfonyl)oxy)phenyl)propanoate (INT-15). LCMS-ESI (m/z) calculated for C₂₃H₂₈F₃NO₆S₂: 535.1; no m/z observed, t_(R)=4.22 min (Method 3).

tert-butyl (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propanoate (INT-16)

Into a degassed solution of tert-butyl (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(((trifluoromethyl)sulfonyl)oxy)phenyl)propanoate (INT-15) (3.89 g, 7.26 mmol), KOAc (2.14 g, 21.79 mmol), and bis-pinacolatoborane (2.40 g, 9.44 mmol) in DMSO (50 mL) was added Pd(dppf)Cl₂ (0.27 g, 0.36 mmol). The reaction mixture was heated at 100° C. for 18 h under an atmosphere of N₂. The reaction mixture was poured into 600 mL of ice-water and the solid was filtered. The precipitate was diluted with EA, dried over MgSO₄, concentrated, and purified by chromatography (EA/hexanes) to provide 3.68 g (99%) of tert-butyl (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propanoate (INT-16). LCMS-ESI (m/z) calculated for C₂₈H₄₀BNO₅S: 513.3; no m/z observed, t_(R)=4.51 min (Method 3).

tert-butyl (S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoate (INT-17)

Prepared using General Procedure 10. Into a degassed solution of tert-butyl (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propanoate (INT-16) (510 mg, 1.0 mmol) and 5-bromo-2-iodopyrimidine (570 mg, 2.0 mmol) in 2/2/1 ACN/THF/saturated aqueous NaHCO₃ (10 mL) was added Pd(dppf)Cl₂ (30 mg, 0.4 mmol). The reaction mixture was heated at 120° C. for 1 h in a microwave reactor. The reaction mixture was diluted with water (100 mL) and EA (50 mL) and filtered over Celite. The aqueous layer was extracted with EA (3×30 mL) and the combined organic layer was dried over MgSO₄, concentrated, and purified by chromatography (EA/hexanes) to provide 342 mg (63%) of tert-butyl (S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoate (INT-17). LCMS-ESI (m/z) calculated for C₂₆H₃₀BrN₃O₃: 543.1. found: 488.0 [M−tBu+H]⁺, t_(R)=10.95 min (Method 2).

Compounds 237-247 were prepared from tert-butyl (S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoate (INT-17) using General Procedures 10 and 8 sequentially.

tert-butyl (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-cyanopyrimidine-2-yl)phenyl)-propanoate (INT-18)

Prepared using General Procedure 1. Into a degassed solution of (S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(4-(tert-butyl)benzamido)propanoate (INT-14) (100 mg, 0.190 mmol), and Zn(CN)₂ (44 mg, 0.370 mmol) in NMP (5 mL) was added Pd(PPh₃)₄ (2 mg, 0.002 mmol). The mixture was heated for 45 min at 80° C. in a microwave reactor then partitioned between DCM and 1470. The organic layer was dried over Na₂SO₄, concentrated, and purified by chromatography (EA/hexanes) to provide 75 mg (84%) of tert-butyl (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-cyanopyrimidine-2-yl)phenyl)propanoate (INT-18). LCMS-ESI (m/z) calculated for C₂₉H₃₂N₄O₃: 484.60; no m/z observed, t_(R)=4.17 min (Method 1). ¹H NMR (400 MHz, CDCl₃) δ 8.97 (s, 2H), 8.38 (d, J=7.9 Hz, 2H), 7.67 (d, J=8.0 Hz, 2H), 7.46-7.35 (m, 2H), 7.33 (d, J=7.9 Hz, 2H), 6.77 (d, J=6.8 Hz, 1H), 4.96 (d, J=6.1 Hz, 1H), 3.27 (dd, J=13.1, 8.0 Hz, 2H), 1.37 (d, J=34.5 Hz, 9H), 1.26 (d, J=21.0 Hz, 9H).

tert-butyl (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(N-hydroxycarbamimidoyl)-pyrimidin-2-yl)phenyl)propanoate

Prepared using General Procedure 2. A solution of (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-cyanopyrimidine-2-yl)phenyl)propanoate (INT-18) (35 mg, 0.07 mmol), hydroxylamine (25 μL, 0.36 mmol, 50% solution in H₂O), and NEt₃ (11 μL, 0.08 mmol) in EtOH (5 mL) was heated at 80° C. for 1.5 h. The reaction mixture was concentrated, dissolved in DCM and washed with H₂O to provide 22 mg of tert-butyl (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(N-hydroxycarbamimidoyl) pyrimidin-2-yl)phenyl)propanoate. LCMS-ESI (m/z) calculated for C₂₉H₃₅N₅O₄: 517.6. found 462.2 [M−tBu+H]⁺, t_(R)=3.72 min (Method 1). ¹H NMR (400 MHz, CDCl₃) δ 9.19 (s, 2H), 8.42 (d, J=8.2 Hz, 2H), 7.67 (dd, J=8.5, 2.1 Hz, 2H), 7.40 (dd, J=9.2, 8.0 Hz, 2H), 7.34 (dd, J=10.3, 8.4 Hz, 2H), 6.74 (dd, J=7.1, 4.7 Hz, 1H), 5.00 (q, J=5.6 Hz, 1H), 2.83 (d, J=5.3 Hz, 2H), 1.44 (s, 9H), 1.28 (d, J=22.0 Hz, 9H).

tert-butyl (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(5-hexyl-1,2,4-oxadiazol-3-yl)pyrimidin-2-yl)phenyl)propanoate (Compound 248)

Prepared using General Procedure 5. A solution of heptanoic acid (7 mg, 0.05 mmol), HOBt (12 mg, 0.09 mmol) and EDC (13 mg, 0.09 mmol) was heated at 80° C. for 2 h. The reaction mixture was diluted with EtOAc and washed with NaHCO₃. The organic layer was dried over Na₂SO₄ and concentrated. The resulting mixture was dissolved in EtOH (2 mL) and heated for 45 min at 80° C. in a microwave reactor. The mixture was concentrated and purified by preparatory HPLC to provide 1.5 mg of tert-butyl (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(5-hexyl-1,2,4-oxadiazol-3-yl)pyrimidin-2-yl)phenyl)propanoate. LCMS-ESI (m/z) calculated for C₃₆H₄₅N₅O₄: 611.8; no m/z observed, t_(R)=5.5 min (Method 1). ¹H NMR (400 MHz, CDCl₃) δ 9.45 (s, 2H), 8.44 (d, J=8.3 Hz, 2H), 7.71 (d, J=8.5 Hz, 2H), 7.48 (d, J=8.5 Hz, 2H), 7.38 (d, J=8.3 Hz, 2H), 6.80 (d, J=7.3 Hz, 1H), 5.04 (dd, J=12.7, 5.5 Hz, 1H), 3.37 (ddd, J=18.9, 13.8, 5.5 Hz, 2H), 3.02 (t, J=7.6 Hz, 2H), 1.92 (dt, J=15.3, 7.5 Hz, 2H), 1.49 (s, 9H), 1.44-1.28 (m, 15H), 0.93 (t, J=7.1 Hz, 3H).

(S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(5-hexyl-1,2,4-oxadiazol-3-yl) pyrimidin-2-yl) phenyl)propanoate was deprotected using General Procedure 8 to provide 1.4 mg (6% overall) of (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(5-hexyl-1,2,4-oxadiazol-3-yl)pyrimidin-2-yl)phenyl) propanoic acid (Compound 248). LCMS-ESI (m/z) calculated for C₃₂H₃₇N₅O₄: 555.68; no m/z observed, t_(R)=11.03 min (Method 2). ¹H NMR (400 MHz, CDCl₃) δ 9.41 (s, 2H), 8.47 (d, J=8.2 Hz, 2H), 7.66 (d, J=8.4 Hz, 2H), 7.42 (dd, J=15.1, 8.4 Hz, 4H), 6.60 (d, J=6.8 Hz, 1H), 5.21-4.95 (m, 1H), 3.43 (ddd, J=20.0, 14.0, 5.6 Hz, 2H), 3.05-2.90 (m, 2H), 1.98-1.76 (m, 2H), 1.55-1.22 (m, 15H), 0.91 (t, J=7.0 Hz, 3H).

tert-butyl (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-hydroxyphenyl)pyrimidin-2-yl)phenyl)propanoate

Prepared using General Procedure 10. To a degassed solution of tert-butyl (S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido) propanoate (INT-17) (180 mg, 0.3 mmol), sodium carbonate (70 mg, 0.7 mmol) and 4-hydroxyphenylboronic acid (55 mg, 0.4 mmol) in 5 mL of 2/2/1 ACN/THF/HA) was added Pd(dppf)Cl₂ (24 mg, 0.03 mmol). The reaction mixture was heated at 110° C. for 45 min in a microwave reactor. The mixture was filtered through celite, concentrated, then dissolved in DCM and washed with H₂O. The organic layer was concentrated and purified by prep HPLC to provide 131 mg (78%) of tert-butyl (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-hydroxyphenyl) pyrimidin-2-yl)phenyl)propanoate. LCMS-ESI (m/z) calculated for C₃₂H₃₅N₃O₄S: 557.7; no m/z observed, t_(R)=4.08 min (Method 1). ¹H NMR (400 MHz, CDCl₃) δ 8.98 (s, 2H), 8.35 (d, J=8.1 Hz, 2H), 7.49 (d, J=8.6 Hz, 2H), 7.40-7.31 (m, 3H), 6.94 (d, J=8.5 Hz, 2H), 6.81 (d, J=3.8 Hz, 1H), 6.51 (d, J=7.5 Hz, 1H), 5.00 (dd, J=12.9, 5.8 Hz, 1H), 3.28 (qd, J=13.8, 5.6 Hz, 2H), 1.47 (s, 9H), 1.39 (s, 9.H).

(S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(decyloxy)phenyl)-pyrimidin-2-yl)phenyl)propanoic acid (Compound 249)

Prepared using General Procedures 12. To a solution of tert-butyl (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(hydroxyphenyl)pyrimidin-2-yl)phenyl) propanoate (20 mg, 0.04 mmol) in DMF (0.5 mL) were added 1-bromodecane (8 μL, 0.05 mmol) and K₂CO₃ (8 mg, 0.05 mmol). The reaction mixture was heated at 40° C. for 18 h, then diluted with DCM and washed with H₂O. The organic layer was dried over Na₂SO₄ and concentrated. The crude material was deprotected using General Procedure 8 then purified by prepartory HPLC to provide 3.9 mg (17%) of (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(decyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 249). LCMS-ESI (m/z) calculated for C₃₈H₄₇N₃O₄S: 641.9; no m/z observed, t_(R)=13.49 min (Method 2). ¹H NMR (400 MHz, CDCl₃) δ 9.01 (s, 2H), 8.36 (d, J=8.1 Hz, 2H), 7.56 (d, J=8.7 Hz, 2H), 7.44 (d, J=8.2 Hz, 2H), 7.33 (d, J=3.8 Hz, 1H), 7.03 (d, J=8.8 Hz, 2H), 6.80 (d, J=3.8 Hz, 1H), 6.54 (d, J=6.8 Hz, 1H), 5.13 (d, J=6.8 Hz, 1H), 4.01 (t, J=6.6 Hz, 2H), 3.44 (d, J=4.9 Hz, 2H), 1.91-1.72 (m, 2H), 1.47 (dd, J=15.0, 7.3 Hz, 2H), 1.38 (s, 9H), 1.28 (s, 12H), 0.88 (t, J=6.8 Hz, 3H).

Compounds 250-252 were prepared from tert-butyl (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-hydroxyphenyl)pyrimidin-2-yl)phenyl) propanoate using General Procedure 12 followed by General Procedure 8.

(S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(tert-butyl)piperidin-1-yl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 253)

Prepared using General Procedure 11. Into a degassed solution of tert-butyl (S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(4-(tert-butyl)benzamido)propanoate (INT-14) (50 mg, 0.09 mmol), sodium tert-butoxide (18 mg, 0.19 mmol) and 4-tert-butylpiperidine HCl (23 mg, 0.11 mmol) in dioxane (2.5 mL) were added Pd₂(dba)₃ (9 mg, 0.01 mmol) and 2-dicyclohexylphosphino-2′-(N,N-dimethylamino)biphenyl (6 mg, 0.015 mmol). The reaction mixture was heated for 45 min at 120° C. in a microwave reactor. The mixture was diluted with EA and washed with NaHCO₃. The organic layer was dried over Na₂SO₄, concentrated, and purified by preparatory HPLC. The isolated intermediate was deprotected using General Procedure 8 to provide 2.9 mg (6%) of (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(tert-butyl)piperidin-1-yl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 253). LCMS-ESI (m/z) calculated for C₃₃H₄₂N₄O₃: 542.7. found 543.3 [M+H]⁺, t_(R)=10.79 min (Purity). ¹H NMR (400 MHz, CDCl₃) δ 8.52 (s, 2H), 8.23 (d, J=8.0 Hz, 2H), 7.72 (d, J=8.4 Hz, 2H), 7.44 (dd, J=11.3, 8.4 Hz, 4H), 6.79 (d, J=6.8 Hz, 1H), 5.18 (d, J=6.5 Hz, 1H), 3.89 (d, J=11.9 Hz, 2H), 3.47 (d, J=5.2 Hz, 2H), 2.83 (t, J=11.5 Hz, 2H), 1.88 (d, J=12.0 Hz, 2H), 1.52-1.37 (m, 2H), 1.34 (s, 9H), 1.24 (dd, J=24.7, 12.8 Hz, 1H), 0.92 (s, 9H).

Compound 254 was prepared from tert-butyl (S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(4-(tert-butyl)benzamido)propanoate (INT-14) using General Procedure 11 then General Procedure 8.

tert-butyl (S)-3-(4-(5-(2H-tetrazol-5-yl)pyrimidin-2-yl)phenyl)-2-(4-(tert-butyl)-benzamido) propanoate

Into a solution of tert-butyl (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-cyanopyrimidin-2-yl)phenyl)propanoate (INT-18) (34 mg, 0.07 mmol) in DMF (2 mL) were added NH₄Cl (7.5 mg, 1.4 mmol) and NaN₃ (7 mg, 0.1 mmol). The reaction mixture was heated at 100° C. for 3 h then diluted with EA and washed with NaHCO₃. The organic layer was dried over Na₂SO₄, concentrated, and purified by preparatory HPLC to provide 4.6 mg (12%) of tert-butyl (S)-3-(4-(5-(2H-tetrazol-5-yl)pyrimidin-2-yl)phenyl)-2-(4-(tert-butyl)benzamido)propanoate. LCMS-ESI (m/z) calculated for C₂₉H₃₃N₇O₃: 527.6; no m/z observed, t_(R)=3.83 min (Method 1). ¹H NMR (400 MHz, CDCl₃) δ 9.35 (s, 2H), 8.42 (d, J=8.1 Hz, 2H), 7.75 (d, J=8.4 Hz, 2H), 7.47 (d, J=8.5 Hz, 2H), 7.43 (d, J=8.2 Hz, 2H), 7.11 (d, J=7.8 Hz, 1H), 5.13 (dd, J=14.4, 7.1 Hz, 1H), 3.28 (ddd, J=21.0, 13.6, 6.7 Hz, 2H), 1.47 (d, J=6.8 Hz, 9H), 1.33 (s, 9H).

Compound 255 was prepared from tert-butyl (S)-3-(4-(5-(2H-tetrazol-5-yl)pyrimidin-2-yl)phenyl)-2-(4-(tert-butyl)benzamido)propanoate using General Procedure 12 then General Procedure 8.

Compound 256 was prepared from tert-butyl (S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(4-(tert-butyl)benzamido)propanoate (INT-14) and 5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)isoindolin-1-one using General Procedures 10, 12 and 8.

Compound 257 was prepared from tert-butyl (S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(4-(tert-butyl)benzamido)propanoate (INT-14) and 6-hydroxypyridine-3-boronic acid pinacol ester using General Procedures 10, 12 and 8.

Compound 258 was prepared from tert-butyl (S)-2-(4-(tert-butyl)benzamido)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propanoate (INT-13) and 5-(benzyloxy)-2-chloropyrimidine using General Procedure 10, followed by General Procedure 8.

Compounds 259 and 260 were prepared from tert-butyl (S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(4-(tert-butyl)benzamido)propanoate (INT-14) and the appropriate boronic acid using General Procedures 10 then 8.

tert-butyl 4-(4-(heptyloxy)phenyl)-3-oxopiperazine-1-carboxylate

To a stirring solution of 1-bromo-4-(heptyloxy)benzene (447 mg, 1.65 mmol) in dioxane (5 mL) were added tert-butyl 3-oxopiperazine-1-carboxylate (330 mg, 1.65 mmol), copper I iodide (31.4 mg, 0.17 mmol), (1R,2R)—N1,N2-dimethylcyclohexane-1,2-diamine (234 mg, 1.65 mmol) and potassium carbonate (456 mg, 3.30 mmol). The reaction mixture was heated at 120° C. for 16 h. The reaction mixture was passed through a plug of celite, eluted with EA (50 mL). The organics were washed with ammonium chloride (25 mL), water (25 mL) and brine (25 mL) then dried over MgSO₄ and concentrated to afford 602 mg (89%) of tert-butyl 4-(4-(heptyloxy)phenyl)-3-oxopiperazine-1-carboxylate. LCMS-ESI (m/z) calculated for C₂₂H₃₄N₂O₄: 390.5. found 319.0 [M+H]⁺, t_(R)=2.90 min. (Method 4).

1-(4-(heptyloxy)phenyl)piperazin-2-one

To tert-butyl 4-(4-(heptyloxy)phenyl)-3-oxopiperazine-1-carboxylate (540 mg, 1.38 mmol) was added 4M HCl in dioxane (2.07 mL, 8.30 mmol). The reaction mixture was stirred at room temperature for 2 h. The precipitate was filtered, washed with hexane (5 mL) and dried. The crude product was purified by column chromatography (79/20/1 DCM/MeOH/NH₄) to afford 325 mg (80%) of 1-(4-(heptyloxy)phenyl)piperazin-2-one as a colorless solid. LCMS-ESI (m/z) calculated for C₁₇H₂₆N₂O₂: 290.4. found 291.0 [M+H]⁺, t_(R)=1.49 min. (Method 4).

Compound 261 was prepared from (S)-2-(4-(tert-butyl)benzamido)-3-(4-(((trifluoromethyl)sulfonyl)oxy) phenyl)propanoate (INT-12) and 1-(4-(heptyloxy)phenyl)piperazin-2-one using General Procedures 11 and 8.

Compound 262 was prepared in a similar fashion from (S)-2-(4-(tert-butyl)benzamido)-3-(4-(((trifluoromethyl)sulfonyl)oxy) phenyl)propanoate (INT-12) and 1-(4-(heptyloxy)phenyl)imidazolidin-2-one using General Procedures 11 and 8.

Compound 263 was prepared using (S)-methyl 2-amino-3-(4-nitrophenyl)propanoate hydrochloride, 4-(tert-butyl)benzoic acid and 1-(4-(heptyloxy)phenyl)piperidin-4-one using General Procedures 7, 14, 15 then 4.

tert-butyl 4-(4-(heptyloxy)phenyl)-4-hydroxypiperidine-1-carboxylate

To a stirring solution of 1-bromo-4-(heptyloxy)benzene (668 mg, 2.46 mmol) in THF (5 mL) at −78° C. was added butyllithium (985 μl, 2.46 mmol). After 30 min, a solution of tert-butyl 4-oxopiperidine-1-carboxylate (491 mg, 2.46 mmol) in THF (2 mL) was added. After 10 min, the cooling bath was removed and the reaction mixture stirred for 16 h. The reaction mixture was poured onto NH₄Cl (50 mL) and extracted with Et₂O (3×20 mL). The combined organics were washed with water (20 mL), dried over MgSO₄ and evaporated. The crude product was purified by column chromatography (5-70% AcMe in iso-hexanes) to afford 0.4 g (33%) of tert-butyl 4-(4-(heptyloxy)phenyl)-4-hydroxypiperidine-1-carboxylate. LCMS-ESI (m/z) calculated for C₂₃H₃₇NO₄: 391.5. found 414.0 [M+Na]⁺, t_(R)=2.24 min. (Method 4).

4-(4-(heptyloxy)phenyl)piperidine (INT-19)

To a stirring solution of tert-butyl 4-(4-(heptyloxy)phenyl)-4-hydroxypiperidine-1-carboxylate (388 mg, 0.99 mmol) and triethylsilane (791 μl, 4.95 mmol) in DCM (2 mL) cooled to −30° C. was slowly added 2,2,2-trifluoroacetic acid (379 μl, 4.95 mmol) in a drop-wise fashion. The reaction mixture was allowed to warm slowly and stirring continued for 16 h. The reaction mixture was poured onto ice-water/NaOH (50 mL/5 mL, 2 M) and extracted with DCM (3×20 mL). The combined organic extracts were washed successively with water (50 mL) and NaHCO₃ (20 mL), dried over MgSO₄ and evaporated to afford 166 mg (58%) of 4-(4-(heptyloxy)phenyl)piperidine (INT-19) as a white, waxy solid. LCMS-ESI (m/z) calculated for C₁₈H₂₉NO: 275.4. found 276.0 [M+H]⁺, t_(R)=2.88 min. (Method 11).

Compound 264 was prepared using (S)-2-(4-(tert-butyl)benzamido)-3-(4-(((trifluoromethyl)sulfonyl)oxy) phenyl)propanoate (INT-12) and 4-(4-(heptyloxy)phenyl)piperidine (INT-19) using General Procedures 11 then 8.

Compound 265 was prepared in a similar fashion to (S)-2-(4-(tert-butyl)benzamido)-3-(4-(4-(4-(heptyloxy)phenyl)piperidin-1-yl)phenyl)propanoic acid (Compound 264) using (S)-2-(4-(tert-butyl)benzamido)-3-(4-(((trifluoromethyl)sulfonyl)oxy) phenyl)propanoate (INT-12) and 3-(4-(heptyloxy)phenyl)pyrrolidine using General Procedures 11 then 8.

Compound 266 was prepared using (S)-2-(4-(tert-butyl)benzamido)-3-(4-(((trifluoromethyl)sulfonyl)oxy) phenyl)propanoate (INT-12) and 1-([1,1′-biphenyl]-4-yl)piperazine using General Procedures 11 then 8.

Compound 267 was prepared using (S)-2-(4-(tert-butyl)benzamido)-3-(4-(((trifluoromethyl)sulfonyl)oxy) phenyl)propanoate (INT-12), tert-butyl 4-(4-hydroxyphenyl)piperazine-1-carboxylate and 1-bromoheptane using General Procedures 12, 8, 11 then 8.

Compound 268 was prepared using (S)-2-(4-(tert-butyl)benzamido)-3-(4-(((trifluoromethyl)sulfonyl)oxy) phenyl)propanoate (INT-12), tert-butyl 1,4-diazepane-1-carboxylate and 1-bromo-4-(heptyloxy)benzene using General Procedures 11, 8, 11 then 8.

Compound 269 was prepared using 5-bromo-2-iodopyridine, tert-butyl (S)-2-(4-(tert-butyl)benzamido)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propanoate (INT-13) and (4-(heptyloxy)phenyl)boronic acid using General Procedures 10, 10, and 8 sequentially.

Compound 270 was prepared using 5-bromo-2-iodopyridine, (4-(heptyloxy)phenyl)boronic acid and tert-butyl (S)-2-(4-(tert-butyl)benzamido)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propanoate (INT-13) using General Procedures 10, 10, and 8 sequentially.

Compound 271 was prepared using 5-bromo-2-iodopyrimidine, (4-(heptyloxy)phenyl)boronic acid and tert-butyl (S)-2-(4-(tert-butyl)benzamido)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propanoate (INT-13) using General Procedures 10, 10, and 8 sequentially.

Compound 272 was prepared using 2-bromo-5-iodopyrazine, (4-(heptyloxy)phenyl)boronic acid and tert-butyl (S)-2-(4-(tert-butyl)benzamido)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propanoate (INT-13) using General Procedures 10, 10, and 8 sequentially.

Compound 273 was prepared using 3-chloro-6-iodopyridazine, (4-(heptyloxy)phenyl)boronic acid and tert-butyl (S)-2-(4-(tert-butyl)benzamido)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propanoate (INT-13) using General Procedures 10, 10, and 8 sequentially.

3-(4-bromophenyl)-6-(4-(heptyloxy)phenyl)-1,2,4-triazine (INT-20)

To a stirring solution of 4-bromobenzohydrazide (1.85 g, 8.62 mmol) in ethanol (10 mL) was added acetic acid (1 mL). The reaction mixture was stirred at 60° C. for 30 min then 2-bromo-1-(4-(heptyloxy)phenyl)ethanone (INT-4) (1.35 g, 4.31 mmol) and sodium acetate (0.389 g, 4.74 mmol) were added and the mixture heated to reflux for 30 min. The reaction mixture was cooled to room temperature and the resultant precipitate was filtered and washed with iso-hexanes (20 mL) then dried. The solid was dissolved in NMP and heated to 120° C. for 16 h. The crude material was cooled to room temperature, diluted with Et₂O (4 mL), filtered, triturated with ethanol (3×2 mL), filtered and dried to afford 241 mg (13%) of 3-(4-bromophenyl)-6-(4-(heptyloxy)phenyl)-1,2,4-triazine (INT-20) as an orange solid. LCMS-ESI (m/z) calculated for C₂₂H₂₄BrN₃O: 425.1. found 426.3 [M+H]⁺, t_(R)=3.40 min (Method 8).

Compound 274 was prepared in a similar fashion to (S)-2-(4-(tert-butyl)benzamido)-3-(4-(4-(4-(heptyloxy)phenyl)thiazol-2-yl)phenyl)propanoic acid (Compound 79) using 3-(4-bromophenyl)-6-(4-(heptyloxy)phenyl)-1,2,4-triazine (INT-20) in place of 2-(4-bromophenyl)-4-(4-(heptyloxy)phenyl)thiazole.

6-(4-bromophenyl)-3(4-(heptyloxy)phenyl)-1,2,4-triazine (INT-21)

To a stirring solution of 4-(heptyloxy)benzohydrazide (400 mg, 1.60 mmol) in ethanol (15 mL) was added acetic acid (1 mL). The reaction mixture was stirred at 60° C. for 30 min then 2-bromo-1-(4-bromophenyl)ethanone (222 mg, 0.80 mmol) and sodium acetate (72.1 mg, 0.88 mmol) were added and the solution heated to reflux for 2 h. The reaction mixture was cooled to room temperature and the resultant crystals were filtered, washed with iso-hexanes (20 mL) then dried to afford 108 mg (31%) of 6-(4-bromophenyl)-3-(4-(heptyloxy)phenyl)-1,2,4-triazine (INT-21). LCMS-ESI (m/z) calculated for C₂₂H₂₄BrN₃O: 425.1. found 426.1 [M+H]⁺, t_(R)=3.38 min (Method 8).

Compound 275 was prepared in a similar fashion to (S)-2-(4-(tert-butyl)benzamido)-3-(4-(6-(4-(heptyloxy)phenyl)-1,2,4-triazin-3-yl)phenyl)propanoic acid (Compound 274) using 6-(4-bromophenyl)-3-(4-(heptyloxy)phenyl)-1,2,4-triazine (INT-21) in place of 3-(4-bromophenyl)-6-(4-(heptyloxy)phenyl)-1,2,4-triazine.

Compound 276 was prepared using (S)-2-(4-(tert-butyl)benzamido)-3-(4-(6-(4-(heptyloxy)phenyl)-1,2,4-triazin-3-yl)phenyl)propanoic acid (Compound 274) using General Procedures 7 and 8.

Compounds 277 and 278 were prepared using tert-butyl (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propanoate (INT-16) and 5-bromo-2-iodopyridine using General Procedures 10, 10, and 8 sequentially.

Compounds 279 and 280 were prepared using tert-butyl (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propanoate (INT-16) and 3-chloro-6-iodopyridazine using General Procedures 10, 10, and 8 sequentially.

Compounds 281 and 282 were prepared using tert-butyl (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propanoate (INT-16) and 2-bromo-5-iodopyrazine using General Procedures 10, 10, and 8 sequentially.

Compound 283 was prepared from (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(6-(4-(heptyloxy)phenyl)pyridazin-3-yl)phenyl)propanoic acid (Compound 279) and tert-butyl glycinate using General Procedures 7 and 8 sequentially.

Compound 284 was prepared from (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrazin-2-yl)phenyl)propanoic acid (Compound 281) and tert-butyl glycinate using General Procedures 7 and 8 sequentially.

Compound 285 was prepared from (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyridin-2-yl)phenyl)propanoic acid (Compound 277) and tert-butyl glycinate using General Procedures 7 and 8 sequentially.

2-(4-(heptyloxy)phenyl)-2-oxoethyl 4-bromobenzoate

To a solution of 2-bromo-1-(4-(heptyloxy)phenyl)ethanone (INT-4) (1.3 g, 4.2 mmol) and 4-bromobenzoic acid (0.70 g, 3.5 mmol) in ACN (30 mL) was added TEA (0.72 ml, 5.2 mmol). After stirring overnight, the mixture was poured onto aq. citric acid and EA then stirred for 10 min before the solid was collected by filtration. The cake was washed with water and iso-hexanes then dried to provide 905 mg (57%) of 2-(4-(heptyloxy)phenyl)-2-oxoethyl 4-bromobenzoate. LCMS-ESI (m/z) calculated for C₂₂H₂₅BrO₄: 432.1. found 433.2 [M+H]⁺, t_(R)=3.24 min (Method 8).

2-(4-bromophenyl)-5-(4-(heptyloxy)phenyl)-1H-imidazole

To a solution of 2-(4-(heptyloxy)phenyl)-2-oxoethyl 4-bromobenzoate (905 mg, 2.09 mmol) intoluene (6 ml) was added CH₃COONH₄ (1600 mg, 20.9 mmol). After heating overnight at 115° C., the reaction mixture was diluted with aq. NaHCO₃ and extracted into DCM. The organic layers were combined, dried over MgSO₄, filtered, and the solvent was removed under reduced pressure. The crude reaction mixture was purified by chromatography (EA/hexanes) to provide 370 mg (33%) of 2-(4-bromophenyl)-5-(4-(heptyloxy)phenyl)-1H-imidazole. LCMS-ESI (m/z) calculated for C₂₂H₂₅BrN₂O: 412.1. found 413.2 [M+H]⁺, t_(R)=2.33 min (Method 8).

2-(4-bromophenyl)-5-(4-(heptyloxy)phenyl)-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-imidazole

To a solution of 2-(4-bromophenyl)-5-(4-(heptyloxy)phenyl)-1H-imidazole (370 g, 900 mmol) in DMF (4 ml) was added NaH (40 mg, 980 mmol). After 2 h, 2-(trimethylsilyl)ethoxymethyl chloride (160 g, 990 mmol) in THF (2 ml) was added dropwise and reaction mixture was stirred overnight. The reaction mixture was diluted with EA and washed with aq. NaHCO₃. The organics were dried over MgSO₄, filtered, and the solvent was removed under reduced pressure. The crude product was purified by chromatography (EA/hexane) to afford 32 mg (65%) of 2-(4-bromophenyl)-5-(4-(heptyloxy)phenyl)-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-imidazole as a tan solid. LCMS-ESI (m/z) calculated for C₂₈H₃₉BrN₂O₂Si: 542.2. found 543.3 [M+H]⁺, t_(R)=3.35 min (Method 8).

(S)-methyl 2-((tert-butoxycarbonyl)amino)-3-(4-(4-(4-(heptyloxy)phenyl)-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-imidazol-2-yl)phenyl)propanoate

A stirred suspension of zinc (68 mg, 1.03 mmol) in DMF (2 mL) was treated with I₂ (12 mg, 0.05 mmol). After the color disappeared, ((R)-methyl 2-((tert-butoxycarbonyl)amino)-3-iodopropanoate (110 mg, 0.34 mmol) and further I₂ (12 mg, 0.05 mmol) were added. After 30 min, the mixture was de-gassed then 2-(4-bromophenyl)-5-(4-(heptyloxy)phenyl)-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-imidazole (170 mg, 0.31 mmol), dicyclohexyl(2′,6′-dimethoxy-[1,1′-biphenyl]-2-yl)phosphine (7 mg, 0.02 mmol) and Pd₂(dba)₃ (8 mg, 7.8 μmol) were added. After further de-gassing, DMF (2 mL) was added and the reaction mixture was heated at 50° C. overnight. The reaction mixture purified by column chromatography (EA/hexane) to provide 55 mg (25%) of (S)-methyl 2-((tert-butoxycarbonyl)amino)-3-(4-(4-(4-(heptyloxy)phenyl)-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-imidazol-2-yl)phenyl)propanoate as a colorless oil. LCMS-ESI (m/z) calculated for C₃₇H₅₅N₃O₆Si: 665.9. found 666.4 [M+H]⁺, t_(R)=3.10 min (Method 8).

(S)-methyl-amino-3-(4-(4-(4-(heptyloxy)phenyl)-1H-imidazol-2-yl)phenyl)-propanoate

(S)-methyl 2-amino-3-(4-(4-(4-(heptyloxy)phenyl)-1H-imidazol-2-yl)phenyl)propanoate was prepared from (S)-methyl 2-((tert-butoxycarbonyl)amino)-3-(4-(4-(4-(heptyloxy)phenyl)-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-imidazol-2-yl)phenyl) propanoate using General Procedure 8. LCMS-ESI (m/z) calculated for C₂₆H₃₃N₃O₃: 435.6. found 436.3 [M+H]⁺, t_(R)=1.43 min (Method 8).

(S)-2-(4-(tert-butyl)benzamido)-3-(4-(4-(4-(heptyloxy)phenyl)-1H-imidazol-2-yl)phenyl)propanoic acid hydrochloride (Compound 286)

To a solution of 4-(tert-butyl)benzoic acid (25 mg, 0.14 mmol), (S)-methyl 2-amino-3-(4-(4-(4-(heptyloxy)phenyl)-1H-imidazol-2-yl)phenyl)propanoate (55 mg, 0.13 mmol), and TEA (53 μl, 0.38 mmol) in DMF (1 mL) was added HATU (53 mg, 0.14 mmol). The reaction mixture was stirred at room temperature for 2 h, diluted in DCM, and washed aq. NaHCO₃. The organic layer was dried, concentrated and purified by chromatography (EA/hexane) to provide 14 mg (17%) of methyl (S)-2-(4-(tert-butyl)benzamido)-3-(4-(4-(4-(heptyloxy)phenyl)-1H-imidazol-2-yl)phenyl)propanoate. LCMS-ESI (m/z) calculated for C₃₇H₄₅N₃O₄: 595.8. found 596.4 [M+H]⁺, t_(R)=2.33 min. (Method 8).

The isolated ester intermediate was deprotected using General Procedure 4 to provide 14 mg (17.5%) of (S)-2-(4-(tert-butyl)benzamido)-3-(4-(4-(4-(heptyloxy)phenyl)-1H-imidazol-2-yl)phenyl)propanoic acid hydrochloride (Compound 286) as a light tan solid. LCMS-ESI (m/z) calculated for C₃₆H₄₃N₃O₄: 581.8. found 582.4 [M+H]⁺, t_(R)=6.56 min (Method 9).

4-bromo-1-(4-(heptyloxy)phenyl)-1H-imidazole

Into a vial was charged (4-(heptyloxy)phenyl)boronic acid (1.00 g, 4.24 mmol), 4-bromo-1H-imidazole (0.31 g, 2.1 mmol), Cu-(TMEDA)₂(OH)₂Cl₂ (0.10 g, 0.21 mmol) and DCM (12 ml). After stirring at room temperature for 42 h, the mixture was purified by chromatography (EA/hexane) to provide 80 mg of impure product. Further purification by chromatography (CAN/DCM) provided 42 mg (6%) of 4-bromo-1-(4-(heptyloxy)phenyl)-1H-imidazole as a colourless oil. LCMS-ESI (m/z) calculated for C₁₆H₂₁BrN₂O: 336.1. found 337.1 [M+H]⁺, t_(R)=2.71 min (Method 8).

(S)-2-(4-(tert-butyl)benzamido)-3-(4-(1-(4-(heptyloxy)phenyl)-1H-imidazol-4-yl)phenyl)propanoic acid (Compound 287)

Prepared using General Procedure 10. Into a vial containing tert-butyl (S)-2-(4-(tert-butyl)benzamido)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propanoate (INT-13) (96 mg, 0.19 mmol) and 4-bromo-1-(4-(heptyloxy)phenyl)-1H-imidazole (64 mg, 0.19 mmol) in 2/2/1 THF/CAN/H₂O (3 mL) was added Na₂CO₃ (40 mg, 0.38 mmol). The reaction mixture was degassed and Pd(dppf)Cl₂ (14 mg, 0.02 mmol) was added. After heating at 120° C. for 30 min in a microwave reactor, the mixture was diluted with EA, washed with aq. NaHCO₃, dried over MgSO₄ and concentrated. Purification by chromatography (EA/hexanes) provided 14 mg (12%) of the intermediate tert-butyl (S)-2-(4-(tert-butyl)benzamido)-3-(4-(1-(4-(heptyloxy)phenyl)-1H-imidazol-4-yl)phenyl)propanoate as a white solid.

The intermediate was deprotected according to General Procedure 8 to provide 9 mg (8%) of (S)-2-(4-(tert-butyl)benzamido)-3-(4-(1-(4-(heptyloxy)phenyl)-1H-imidazol-4-yl)phenyl)propanoic acid (Compound 287) as a white solid. LCMS-ESI (m/z) calculated for C₃₆H₄₃N₃O₄: 581.3. found 582.2 [M+H]⁺, t_(R)=8.33 min (Method 9).

(S)-2-(4-(tert-butyl)benzamido)-3-(4-(1-(4′-methyl-[1,1′-biphenyl]-4-yl)-1H-pyrazol-4-yl)phenyl)propanoic acid (Compound 288)

Prepared using General Procedure 10. Into a vial containing tert-butyl (S)-2-(4-(tert-butyl)benzamido)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propanoate (INT-13) (100 mg, 0.20 mmol) and 4-bromo-1-(4′-methyl-[1,1′-biphenyl]-4-yl)-1H-pyrazole (63 mg, 0.201 mmol) in 2/1 ACN/H₂O (3 mL) was added sat aq. NaHCO₃ (670 μL, 0.60 mmol). The reaction mixture was degassed and Pd(dppf)Cl₂ (15 mg, 0.02 mmol) was added. After heating at 120° C. for 60 min in a microwave reactor, the mixture was diluted with DCM, washed with aq. NaHCO₃, passed through a phase separation cartridge, and concentrated. Purification by chromatography (EA/hexane) provided 58 mg (47%) of the intermediate tert-butyl (S)-2-(4-(tert-butyl)benzamido)-3-(4-(1-(4′-methyl-[1,1′-biphenyl]-4-yl)-1H-pyrazol-4-yl)phenyl)propanoate as a white solid. LCMS-ESI (m/z) calculated for C₄₀H₄₃N₃O₃: 613.8. found 614.0 [M+H]⁺, t_(R)=3.02 min (Method 8). The intermediate was stirred in 4M HCl/dioxane for 132 h and filtered. The resulting solid was washed with hexane to provide 13 mg of solid product. The filtrate was loaded onto a strong anion exchange (SAX) column, washed with MeOH, and eluted with 5% AcOH in MeOH. The elution liquors were combined with the trituration solid and concentrated in vacuo to afford 18 mg (32%) of (S)-2-(4-(tert-butyl)benzamido)-3-(4-(1-(4′-methyl-[1,1′-biphenyl]-4-yl)-1H-pyrazol-4-yl)phenyl)propanoic acid (Compound 288) as a white solid. LCMS-ESI (m/z) calculated for C₃₆H₃₅N₃O₃: 557.3. found 558.0 [M+H]⁺, t_(R)=9.37 min (Method 9).

methyl 2-(4-bromophenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)acetate

Prepared using General Procedure 7. To a solution of methyl 2-amino-2-(4-bromophenyl)acetate, HCl (730 mg, 2.6 mmol), 5-(tert-butyl)thiophene-2-carboxylic acid (480 mg, 2.6 mmol) and TEA (1090 μl, 7.8 mmol) in DMF (10 mL) was added HATU (1090 mg, 2.9 mmol). After stirring overnight, the reaction mixture was diluted with EA (100 mL) and washed with 1M HCl (100 mL) and brine. The organic layer was dried over Mg₂SO₄, concentrated, and purified by chromatography (EA/hexane) to provide 900 mg (76%) of methyl 2-(4-bromophenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)acetate as a white powder. LCMS-ESI (m/z) calculated for C₁₈H₂₀BrNO₃S: 410.3. found 412.0 [M+2]⁺, t_(R)=2.71 min (Method 8).

methyl 2-(5-(tert-butyl)thiophene-2-carboxamido)-2-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)acetate

Prepared using General Procedure 10. A solution of 2-(4-bromophenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)acetate (900 mg, 2.2 mmol), KOAc (650 mg, 6.6 mmol) and 4,4,4′,4′,5,5,5′,5′-octamethyl-2,2′-bi(1,3,2-dioxaborolane) (670 mg, 2.6 mmol) in DMSO (10 mL) at 40° C. was de-gassed. PdCl₂dppf (80 mg, 0.11 mmol) was added and the mixture was heated at 100° C. for 3 h. The reaction mixture was purified by chromatography (EA/hexane with 1% TEA) to provide 491 mg (41%) of methyl 2-(5-(tert-butyl)thiophene-2-carboxamido)-2-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)acetate. LCMS-ESI (m/z) calculated for C₂₄H₃₂BNO₅S: 457.4. found 458.0 [M+H]⁺, t_(R)=2.89 min (Method 8).

2-(4(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)acetic acid

Prepared using General Procedure 10. A mixture of methyl 2-(5-(tert-butyl)thiophene-2-carboxamido)-2-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)acetate (320 mg, 0.71 mmol) and 5-bromo-2-iodopyrimidine (220 mg, 0.78 mmol) in THF (2 mL) and ACN (2 mL) was treated with saturated aq. NaHCO₃ (1600 μl, 1.40 mmol) and de-gassed (N₂ bubbling). PdCl₂dppf (26 mg, 0.04 mmol) was added and the mixture was heated at 120° C. for 30 min in a microwave reactor. The mixture was poured onto H₂O (30 mL), acidified with AcOH and extracted with EA (3×15 mL). The combined organics were dried over MgSO₄, evaporated, and purified by chromatography (EA/hexane with 1% AcOH) to provide 160 mg (46%) of 2-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)acetic acid as a white solid. LCMS-ESI (m/z) calculated for C₂₁H₂₀BrN₃O₃S: 473.0. found 474.0 [M+H]⁺, t_(R)=2.68 min (Method 8).

2-(5-(tert-butyl)thiophene-2-carboxamido)-2-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)acetic acid (Compound 289)

Prepared using General Procedure 10. A solution of 2-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)acetic acid (160 mg, 0.34 mmol), (4-(heptyloxy)phenyl)boronic acid (94 mg, 0.40 mmol) and sat aq. NaHCO₃ (930 μl, 0.84 mmol) in ACN (1.5 mL) and THF (1.5 mL) was degassed (N₂ bubbling). PdCl₂(dppf) (262 mg, 0.34 mmol) was added and the reaction mixture was heated at 110° C. in a microwave reactor for 50 min. The reaction was partitioned between EA and H₂O. The organic layer was dried over MgSO₄, filtered, concentrated and purified by chromatography (EA/hexane with 1% AcOH) to afford 113 mg (55%) of 2-(5-(tert-butyl)thiophene-2-carboxamido)-2-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)acetic acid (Compound 289) as a white solid. LCMS-ESI (m/z) calculated for C₃₄H₃₉N₃O₄S: 585.3. found 586.0 [M+H]⁺, t_(R)=3.37 min (Method 9).

(S)—N-(1-amino-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)-1-oxopropan-2-yl)-4-(tert-butyl)benzamide

A solution of (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 85) (245 mg, 0.413 mmol) in DMF (5 mL) was treated with NH₄Cl (180 mg, 3.3 mmol), DIEA (760 μl, 4.1 mmol) and HATU (170 mg, 0.4 mmol). After stirring overnight, the reaction mixture was diluted with EA (50 mL), washed with aq. 0.5 M HCl (100 mL) and brine (20 mL), then dried over MgSO₄ and concentrated. The residue was re-slurried from ACN (4 mL) to afford 204 mg (77%) of (S)—N-(1-amino-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)-1-oxopropan-2-yl)-4-(tert-butyl)benzamide as a fine white solid. LCMS-ESI (m/z) calculated for C₃₇H₄₄N₄O₃: 592.3. found 593.0 [M+H]⁺, t_(R)=3.43 min (Method 6).

(S)-methyl 3-(4-(tert-butyl)benzamido)-4-(4-hydroxyphenyl)butanoate

Prepared using General Procedure 7. A solution of (S)-methyl 3-amino-4-(4-hydroxyphenyl)butanoate hydrochloride (2.1 g, 8.7 mmol), 4-(tert-butyl)benzoic acid (1.6 g, 9.0 mmol) and DIEA (3.5 ml, 18.8 mmol) in DMF (20 mL) and DCM (20 mL) was treated with HATU (3.3 g, 8.5 mmol). After 1 h, the mixture was poured onto 1M HCl (100 mL) and extracted with EA (3×50 mL). The combined organic extracts were washed successively with 1M HCl (50 mL), water (50 mL) and brine (20 mL), then dried over MgSO₄ and concentrated. The resulting residue was purified by chromatography (EA/hexane) to provide 2.3 g (72%) of (S)-methyl 3-(4-(tert-butyl)benzamido)-4-(4-hydroxyphenyl)butanoate as white needles. LCMS-ESI (m/z) calculated for C₂₂H₂₇NO: 369.4. found 370.0 [M+H]⁺, t_(R)=2.52 min (Method 6).

(S)-methyl 3-(4-(tert-butyl)benzamido)-4-(4-(((trifluoromethyl)sulfonyl)oxy)-phenyl)butanoate

Prepared using General Procedure 9. A stirred solution of (S)-methyl 3-(4-(tert-butyl)benzamido)-4-(4-hydroxyphenyl)butanoate (2.30 g, 6.3 mmol) in DCM (25 mL) was treated with DIEA (1.4 ml, 7.6 mmol) then 1,1,1-trifluoro-N-phenyl-N-((trifluoromethyl)sulfonyl)methanesulfonamide (2.5 g, 6.9 mmol). After 18 h, the reaction mixture was diluted with DCM (100 mL), H₂O (50 mL) and NaHCO₃ (75 mL) and stirred for 1 h. The organic layer was isolated, washed with NaHCO₃ (100 mL), dried over MgSO₄, concentrated, and purified by chromatography (EA/hexane) to provide 2.5 g (75%) of (5′)-methyl 3-(4-(tert-butyl)benzamido)-4-(4-(((trifluoromethyl)sulfonyl)oxy)phenyl)butanoate as a thick oil. LCMS-ESI (m/z) calculated for C₂₃H₂₆F₃NO₆S: 501.5. found 502 [M+H]⁺, t_(R)=3.20 min (Method 6).

(S)-methyl 3-(4-(tert-butyl)benzamido)-4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)butanoate

To a vial under a N₂ atmosphere were added 4,4,4′,4′,5,5,5′,5′-octamethyl-2,2′-bi(1,3,2-dioxaborolane) (530 mg, 2.1 mmol), (S)-methyl 3-(4-(tert-butyl)benzamido)-4-(4-(((trifluoromethyl)sulfonyl)oxy)phenyl)butanoate (810 mg, 1.6 mmol), KOAc (280 mg, 4.8 mmol) and DMSO (14 mL). The solution was degassed. Pd(dppf)Cl₂ (59 mg, 0.08 mmol) was added and the solution was heated to 80° C. for 6 h. The reaction mixture was cooled to room temperature, diluted with EA (100 mL) and washed with sat aq. NaHCO₃ (50 ml) and brine (50 mL). The organic layer was dried over MgSO₄, concentrated and purified by chromatography (EA/hexane) to afford 446 mg (57%) of (S)-methyl 3-(4-(tert-butyl)benzamido)-4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl) as a colorless crystalline solid. LCMS-ESI (m/z) calculated for C₂₈H₃₈BNO₅: 479.4. found 480.3 [M+H]⁺, t_(R)=2.86 min (Method 6).

(S)-methyl 4-(4-(5-bromopyrimidin-2-yl)phenyl)-3-(4-(tert-butyl)benzamido)-butanoate

Prepared using General Procedure 10. Into a vial were added(S)-methyl 3-(4-(tert-butyl)benzamido)-4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl) (390 mg, 0.81 nmol), 5-bromo-2-iodopyrimidine (240 mg, 0.85 mmol), Na₂CO₃ (170 mg, 1.6 mmol), THF (1.5 mL), ACN (1.5 mL) and H₂O (0.75 mL). The solution was degassed and PdCl₂(dppf) (60 mg, 0.08 mmol) was added. The reaction mixture was heated in a microwave reactor at 110° C. for 60 min. The sample was cooled, diluted with EA (50 mL), and washed with sat aq.NaHCO₃ (30 mL). The organic layers were dried over MgSO₄, filtered, concentrated, and purified by chromatography (EA/hexane) to afford 205 mg (49%) of (S)-methyl 4-(4-(5-bromopyrimidin-2-yl)phenyl)-3-(4-(tert-butyl)benzamido)butanoate as a colourless solid. LCMS-ESI (m/z) calculated for C₂₆H₂₈BrN₃O₃: 510.4. found 512.2 [M+H]⁺, t_(R)=2.77 min (Method 6).

(S)-3-(4-(tert-butyl)benzamido)-4-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)butanoic acid (Compound 291)

Prepared using General Procedures 10 and 4. Into a vial were added (S)-methyl 4-(4-(5-bromopyrimidin-2-yl)phenyl)-3-(4-(tert-butyl)benzamido)butanoate (180 mg, 0.35 mmol), (4-(heptyloxy)phenyl)boronic acid (98 mg, 0.41 mmol), Na₂CO₃ (73 mg, 0.69 mmol), ACN (1.2 mL), THF (1.2 mL) and H₂O (0.7 mL). The solution was degassed, Pd(dppf)Cl₂ (25 mg, 0.03 mmol) was added, and the reaction mixture was heated in a microwave reactor at 110° C. for 80 min. The reaction mixture was diluted with EA (50 mL) and washed with sat aq. NaHCO₃ (30 mL). The organics layer was dried over MgSO₄, concentrated, and purified by chromatography (EA/hexane) to afford 44 mg of methyl ester intermediate. The solid was dissolved in THF (1 mL) and 1M LiOH (1 mL). The solution was stirred at ambient temperature for 1 h, concentrated, and 1M HCl (1.5 mL) was added. The solid was collected by filtration, washing with water (2×5 mL) and hexane (2×5 mL) to provide 19 mg (9%) of (S)-3-(4-(tert-butyl)benzamido)-4-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)butanoic acid (Compound 291) as a colorless solid. LCMS-ESI (m/z) calculated for C₃₈H₄₅N₃O₄: 607.8. found 608.4 [M+H]⁺, t_(R)=10.99 min (Method 10).

5-bromo-2-chloro-4-methoxypyrimidine

To a stirred solution of 5-bromo-2,4-dichloropyrimidine (500 mg, 2.19 mmol) in MeOH (5 mL) was added a 30% solution of sodium methoxide (0.40 mL, 2.26 mmol). The reaction mixture was stirred at room temperature for 2 h then concentrated. The residue was dissolved in water (5 mL) and extracted with EA (3×5 mL). The combined organic layer was washed with brine, dried over MgSO₄ and concentrated to afford 432 mg (88%) of 5-bromo-2-chloro-4-methoxypyrimidine as white solid. LCMS-ESI (m/z) calculated for C₅H₄BrClN₂O: 223.4. found 224.2 [M+H]⁺, t_(R)=7.66 min. (Method 2).

5-bromo-2-iodo-4-methoxypyrimidine

Prepared using General Procedure 16: To a stirred solution of 5-bromo-2-chloro-4-methoxypyrimidine (100 mg, 0.447 mmol) in 57% aq. HI (1.0 mL) was added sodium iodide (125 mg, 0.838 mmol). The reaction mixture was stirred at 40° C. for 16 h, cooled, then quenched with NaHCO₃ (5 mL) and extracted with EA (3×5 mL). The combined organics were washed with brine, dried over MgSO₄ and concentrated to afford 22.0 mg (16%) of 5-bromo-2-iodo-4-methoxypyrimidine as an off-white solid. LCMS-ESI (m/z) calculated for C₅H₄BrIN₂O: 314.9. found 315.9 [M+H]⁺, t_(R)=8.22 min. (Method 2). ¹H NMR (400 MHz, DMSO) δ 8.25 (s, 1H), 4.07 (s, 3H).

tert-butyl (S)-3-(4-(5-bromo-4-methoxypyrimidin-2-yl)phenyl)-2-(4-(tert-butyl)benzamido)propanoate

Prepared using General Procedure 10: A mixture of tert-butyl (S)-2-(4-(tert-butyl)benzamido)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propanoate (INT-13) (30.0 mg, 0.06 mmol), 5-bromo-2-iodo-4-methoxypyrimidine (22.3 mg, 0.07 mmol), and sodium carbonate (12.5 mg, 0.12 mmol) in acetonitrile (0.80 mL), THF (0.80 mL) and H₂O (0.40 mL) was degassed for 10 min. Pd(dppf)Cl₂:CH₂Cl₂ (5 mg, 0.005 mmol) was added and the reaction mixture heated at 110° C. in a microwave for 30 min. Once cooled, the reaction was diluted with NaHCO₃ (5 mL), extracted with EA (3×5 mL) and the combined organics dried over MgSO₄ and concentrated. The residue was purified by column chromatography (EA/hexanes) to afford 20.0 mg (60%) of tert-butyl (S)-3-(4-(5-bromo-4-methoxypyrimidin-2-yl)phenyl)-2-(4-(tert-butyl)benzamido)propanoate as a white solid. LCMS-ESI (m/z) calculated for C₂₉H₃₄BrN₃O₄: 568.5. found 514.2 [M−tBu+H]⁺, t_(R)=11.0 min. (Method 2).

tert-butyl (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)-4-methoxypyrimidin-2-yl)phenyl)propanoate

Prepared using General Procedure 10: A mixture of tert-butyl (S)-3-(4-(5-bromo-4-methoxypyrimidin-2-yl)phenyl)-2-(4-(tert-butyl)benzamido)propanoate (18.0 mg, 0.031 mmol), (4-(heptyloxy)phenyl)boronic acid (10.0 mg, 0.042 mmol) and sodium carbonate (8.97 mg, 0.084 mmol) in acetonitrile (0.80 mL), THF (0.80 mL) and H₂O (0.40 mL) was degassed for 10 min. Pd(dppf)Cl₂:CH₂Cl₂ (3.09 mg, 0.003 mmol) was added and the reaction mixture heated at 110° C. in a microwave for 30 min. Once cooled, the reaction was diluted with NaHCO₃ (5 mL) and extracted with EA (3×5 mL). The combined organics were dried over MgSO₄ and concentrated. The residue was purified by column chromatography (EA:hexanes) to afford 20.0 mg (60%) of tert-butyl (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)-4-methoxypyrimidin-2-yl)phenyl)propanoate as pale yellow solid. LCMS-ESI (m/z) calculated for C₄₂H₅₃N₃O₅: 679.8; no ion observed, t_(R)=13.83 min. (Method 2).

(S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)-4-methoxypyrimidin-2-yl)phenyl)propanoic acid (Compound 292)

Prepared using General Procedure 8: A solution of tert-butyl (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl-4-methoxypyrimidin-2-yl)phenyl)propanoate (20.0 mg, 0.029 mmol) in DCM (1 mL) was treated with TFA (0.350 mL). The reaction mixture was stirred at room temperature for 12 h. The solvent was concentrated and the product was purified preparative HPLC to yield 15.0 mg (82%) of (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)-4-methoxypyrimi din-2-yl)phenyl)propanoic acid (Compound 292) as pale yellow solid. LCMS-ESI (m/z) calculated for C₃₈H₄₅N₃O₅: 623.8; no ion observed, t_(R)=12.17 min. (Method 2).

Compound 293 was prepared using tert-butyl (S)-2-(4-(tert-butyl)benzamido)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propanoate (INT-13) and 5-bromo-2-chloro-N,N-dimethylpyrimidin-4-amine using General Procedures 10, 10 and 8 sequentially.

Compound 294 was prepared using tert-butyl (S)-2-(4-(tert-butyl)benzamido)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propanoate (INT-13) and 5-bromo-2-iodo-4-methylpyridine using General Procedures 10, 10 and 8 sequentially.

5-bromo-2-iodo-4-(trifluoromethyl)pyridine

Prepared using General Procedure 17: To a stirred a solution of 5-bromo-2-chloro-4-(trifluoromethyl)pyridine (150 mg, 0.576 mmol) in acetonitrile (2 mL) was added sodium iodide (518 mg, 3.45 mmol). The reaction mixture was heated to 40° C. and acetyl chloride (26.0 mg, 0.345 mmol) was added. The reaction mixture was stirred at 40° C. for 90 min. Once cooled, the reaction was quenched with NaHCO₃ (5 mL) and extracted with EA (3×5 mL). The combined organics were washed with brine (10 mL), dried over MgSO₄and concentrated to give 80.0 mg (40%) of 5-bromo-2-iodo-4-(trifluoromethyl)pyridine as a white crystalline solid which was used in the subsequent step without purification. LCMS-ESI (m/z) calculated for C₆H₂BrF₃IN: 351.9. found 352.5 [M+H]⁺, t_(R)=3.91 min. (Method 1).

Compound 295 was prepared by employing tert-butyl (S)-2-(4-(tert-butyl)benzamido)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propanoate (INT-13) and 5-bronco-2-iodo-4-(trifluoromethyl)pyridine using General Procedures 10, 10 and 8 sequentially.

(S)-(2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)glycine (Compound 297)

Prepared using General Procedures 7 and 8: To a solution of (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 85) (185 mg, 0.312 mmol), tert-butyl 2-aminoacetate hydrochloride (52.2 mg, 0.312 mmol), and DIEA (163 μl, 0.935 mmol) in DMF (3 mL) was added HATU (124 mg, 0.327 mmol). The mixture was stirred for 1 h at room temperature. The crude material was diluted in EA (50 mL), washed with saturated aqueous sodium bicarbonate (20 mL) and brine (20 mL). The organic layer was dried over MgSO₄, filtered, and the solvent removed under reduced pressure. The crude product was purified by chromatography (EA/hexanes) to afford the intermediate tert-butyl ester (110 mg).

The tert-butyl ester was dissolved in DCM (1 mL) and TFA (2 mL) was added. The solution was stirred at room temperature for 3 h and the solvent was removed under reduced pressure. The crude mixture was dissolved in DMSO (0.8 mL) and precipitated by the addition of water (3 mL). The precipitate was filtered, washed with water (3 mL) and hexane (2×2 mL) to yield 58 mg (28%) of (S)-(2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)glycine (Compound 297) as a colorless solid. LCMS-ESI (m/z) calculated for C₃₉H₄₆N₄O₅: 650.4. found 651.4 [M+H]⁺, t_(R)=10.43 min (Method 10). The chiral purity was calculated at 92% e.e. (Chiral Method). ¹H NMR (400 MHz, DMSO-d6) δ 12.62 (s, 1H), 9.15 (s, 2H), 8.60 (d, J=8.6 Hz, 1H), 8.49-8.40 (m, 1H), 8.35-8.25 (m, 2H), 7.84-7.70 (m, 4H), 7.58-7.49 (m, 2H), 7.48-7.41 (m, 2H), 7.16-7.02 (m, 2H), 4.90-4.75 (m, 1H), 4.03 (t, J=6.5 Hz, 2H), 3.93-3.75 (m, 2H), 3.25 (dd, J=13.8, 3.8 Hz, 1H), 3.09 (dd, J=13.7, 11.2 Hz, 1H), 1.79-1.68 (m, 2H), 1.51-1.21 (m, 17H), 0.94-0.80 (m, 3H).

(S)-3-(2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanamido)propanoic acid (Compound 298)

Prepared using General Procedures 7 and 8: HATU (116 mg, 0.31 mmol) was added to a stirring solution of (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 85) (173 mg, 0.29 mmol), tert-butyl 3-aminopropanoate hydrochloride (53 mg, 0.29 mmol) and DIEA (153 μl, 0.87 mmol) in DMF (3 mL). The crude material was diluted in EA (50 mL), washed with saturated aqueous sodium bicarbonate (20 mL) and brine (20 mL). The organic layer was dried over MgSO₄, filtered, and the solvent removed under reduced pressure. The crude product was purified by chromatography (EA/hexanes) to afford the intermediate tert-butyl ester (122 mg).

The tert-butyl ester was dissolved in DCM (1 mL) and TFA (2 mL) was added. The reaction mixture was stirred at room temperature for 3 h and the solvent was removed under reduced pressure. The crude mixture was dissolved in DMSO (0.8 mL) and precipitated by the addition of water (3 mL). The precipitate was filtered, washed with water (3 mL) and hexane (2×2 mL) to yield 48 mg (25%) of (S)-3-(2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanamido)propanoic acid (Compound 298) as a colorless solid. LCMS-ESI (m/z) calculated for C₄₀H₄₈N₄O₅: 664.4. found 665.4 [M+H]⁺, t_(R)=10.36 min (Method 10). The chiral purity was calculated at 92% e.e. (Chiral Method, isocratic with 40% Solvent A, 60% Solvent B). ¹H NMR (400 MHz, DMSO-d6) δ12.26 (s, 1H), 9.15 (s, 2H), 8.51 (d, J=8.5 Hz, 1H), 8.40-8.25 (m, 2H), 8.25-8.14 (m, 1H), 7.96-7.65 (m, 4H), 7.65-7.36 (m, 4H), 7.28-6.99 (m, 2H), 4.84-4.64 (m, 1H), 4.03 (t, J=6.5 Hz, 2H), 3.32-3.24 (m, 2H), 3.17 (dd, J=13.7, 4.4 Hz, 1H), 3.06 (dd, J=13.7, 10.4 Hz, 1H), 2.41 (t, J=6.9 Hz, 2H), 1.81-1.68 (m, 2H), 1.50-1.20 (m, 17H), 0.88 (t, J=6.7 Hz, 3H).

(S)-4-(tert-butyl)-N-(3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)-1-(methylsulfonamido)-1-oxopropan-2-yl)benzamide (Compound 299)

To a solution of (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 85) (78.0 mg, 0.13 mmol), methanesulfonamide (20.0 mg, 0.21 mmol), and DMAP (16.1 mg, 0.13 mmol) in DMF (1.5 mL) was added EDC (40.3 mg, 0.21 mmol) and the solution stirred overnight at room temperature. The reaction mixture was diluted in EA (50 mL), washed with aqueous saturated sodium bicarbonate (2×20 mL) and brine (20 mL). The organic layer was dried over MgSO₄, filtered, and the solvent removed under reduced pressure. The crude product was purified by chromatography (hexane/EA) to afford 36 mg (40%) of (S)-4-(tert-butyl)-N-(3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)-1-(methyl sulfonamido)-1-oxopropan-2-yl)benzamide (Compound 299) as a colorless solid. LCMS-ESI (m/z) calculated for C₃₈H₄₆N₄O₅S: 670.3. found 671.3 [M+H]⁺, t_(R)=11.01 min (Method 10).

Compounds 300-304 were prepared from (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 85) using General Procedures 3 or 7 followed by 4 or 8.

Compounds 305-317 were prepared from (S)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)-2-(4-isopropylbenzamido)propanoic acid (Compound 94) using General Procedures 3 or 7 followed by 4 or 8.

Compound 318 was prepared from (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(hexyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 225) using General Procedures 7 followed by 8.

(S)-(2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)glycine (Compound 319)

Prepared using General Procedures 7 and 4: TEA (93 μl, 0.67 mmol) was added to a solution of (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)-phenyl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 192) (100 mg, 0.167 mmol), methyl 2-aminoacetate hydrochloride (23.03 mg, 0.18 mmol) and HATU (76 mg, 0.20 mmol) in DMF (2 mL). The solution was stirred at room temperature for 18 h. The reaction mixture was diluted with EA (25 mL) and washed with saturated aqueous NaHCO₃ (2×25 mL) and 1 M HCl (2×25 mL). The organic phase was dried over MgSO₄, filtered, and concentrated. The solid was purified by chromatography (EA/hexanes) to afford the methyl ester intermediate as a colorless solid.

The solid was dissolved in THF (3 mL) and 1 M LiOH (333 μl, 0.33 mmol) was added. The resultant yellow solution was stirred at room temperature for 1 h. The reaction mixture was acidified to pH 1 using 1M HCl and the THF removed in vacuo. The residue was suspended in water and the mixture filtered under vacuum. The solid was azeotroped with MeOH and dried in a vacuum oven to afford 48 mg (44%) of (S)-(2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)-propanoyl)glycine (Compound 319) as a yellow solid. LCMS-ESI (m/z) calculated for C₃₇H₄₄N₄O₅S: 656.3. found 657.0 [M+H]⁺, t_(R)=10.34 min (Method 10). The chiral purity was calculated at 95% e.e. (Chiral Method). ¹H NMR (400 MHz, DMSO-d6) δ 12.61 (s, 1H), 9.16 (s, 2H), 8.62 (d, J=8.7 Hz, 1H), 8.51-8.41 (m, 1H), 8.36-8.26 (m, 2H), 7.84-7.75 (m, 2H), 7.68 (d, J=3.8 Hz, 1H), 7.55-7.43 (m, 2H), 7.14-7.05 (m, 2H), 6.92 (d, J=3.8 Hz, 1H), 4.84-4.72 (m, 1H), 4.03 (t, J=6.5 Hz, 2H), 3.89-3.73 (m, 2H), 3.22 (dd, J=13.9, 3.7 Hz, 1H) 3.10-2.96 (m, 1H), 1.78-1.66 (m, 2H), 1.31 (s, 17H), 0.94-0.81 (m, 3H).

(S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)-pyrimidin-2-yl)phenyl)propanoyl)-L-glutamine (Compound 320)

Prepared using General Procedures 7 and 8: To a stirred solution of (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)-propanoic acid (Compound 192) (250 mg, 0.42 mmol), (S)-tert-butyl 2,5-diamino-5-oxopentanoate hydrochloride (109 mg, 0.46 mmol) and TEA (145 μl, 1.04 mmol) in DMF (4 mL) was added HATU (190 mg, 0.50 mmol) and the reaction mixture was stirred at room temperature for 2 h. The reaction mixture was diluted with EA (50 mL), washed with 1M HCl (50 mL) and brine (100 mL), dried over MgSO₄, and concentrated.

The crude product was dissolved in DCM (5 mL) and TFA (3 mL) was added. After 3 h, toluene (10 mL) was added and the solvent removed. The compound was purified by preparative HPLC to afford 78 mg (25%) of ((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)-L-glutamine (Compound 320) as a white powder. LCMS-ESI (m/z) calculated for C₄₀H₄₉N₅O₆S: 727.3. found 728.0 [M+H]⁺, t_(R)=10.71 min (Method 10). The chiral purity was 90% d.e. (Chiral Method). ¹H NMR (400 MHz, DMSO-d6) δ 9.15 (s, 2H), 8.56 (d, J=8.6 Hz, 1H), 8.42-8.34 (m, 1H), 8.34-8.27 (m, 2H), 7.84-7.75 (m, 2H), 7.66 (d, J=3.9 Hz, 1H), 7.54-7.48 (m, 2H), 7.32 (s, 1H), 7.12-7.04 (m, 2H), 6.90 (d, =3.8 Hz, 1H), 6.77 (s, 1H), 4.81-4.65 (m, 1H), 4.19-4.11 (m, 1H), 4.03 (t, J=6.5 Hz, 2H), 3.20 (dd, J=14.1, 3.5 Hz, 1H), 3.07-2.96 (m, 1H), 2.24-2.09 (m, 2H), 2.06-1.93 (M, 1H), 1.90-1.79 (m, 1H), 1.78-1.68 (m, 2H), 1.47-1.20 (m, 17H), 0.93-0.82 (m, 3H).

Compounds 321-326 were prepared from (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)-propanoic acid (Compound 192) using General Procedures 3 or 7 followed by 4 or 8.

(S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-(heptyloxy)phenyl) pyrimidin-2-yl) phenyl) propanoic acid (INT-22)

Prepared using General Procedure 8. To a stirred solution of (S)-tert-butyl 2-amino-3-(4-(5-(4-(heptyloxy)phenyl) pyrimidin-2-yl)phenyl)propanoate (INT-8) (6.4 g, 10.26 mmol) in DCM (30 mL) was added TFA (20 mL) and the mixture was stirred at room temperature for 3 h. Toluene (50 mL then 2×30 mL) was added and the solvent as removed under vacuum. The material was sonicated in DCM (20 mL) and acetonitrile (30 mL) was added. The DCM was partially removed under a flow of air until a precipitate began to appear. The suspension was stirred for a further 2 h and the yellow solid was isolated by filtration and washed with additional iso-hexanes (100 mL). The solid was dried under suction then at under vacuum at 40° C. overnight to afford 5.5 g (90%) (S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl) propanoic acid (INT-22) as a yellow solid. LCMS-ESI (m/z) calculated for C₃₄H₃₇N₃O₅: 567.3. found 568.3 [M+H]⁺; t_(R)=10.11 min (Method 10).

tert-butyl ((S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-(heptyloxy)phenyl)-pyrimidin-2-yl)phenyl)propanoyl)-D-alaninate (INT-23)

Prepared using General Procedure 7. To a stirred solution of (S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)-propanoic acid (INT-22) (1000 mg, 1.762 mmol) and (R)-tert-butyl 2-aminopropanoate HCl (352 mg, 1.938 mmol) in DMF (8 mL). The solution was cooled to 0° C. and TEA (737 μl, 5.28 mmol) was added. To this mixture was slowly added HATU (804 mg, 2.114 mmol) over 5 mins then the reaction mixture was allowed to warm to room temperature. The reaction mixture was diluted with EA (150 mL) and washed with 1M HCl (100 mL) then brine (100 mL). The organic layer was isolated and dried over MgSO₄. The solvents were removed to give a white solid and ACN (50 mL) was added and the suspension was sonicated. The fine suspension was stirred for 30 mins then filtered and washed with iso-hexanes to afford 881 mg (70.5%) of tert-butyl ((S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)-D-alaninate (INT-23) as a white powder. LCMS-ESI (m/z) calculated for C₄₁H₅₀N₄O₆: 694.4; no m/z observed, t_(R)=3.39 min (Method 11). The chiral purity was calculated at >99% e.e. (Chiral Method).

tert-butyl ((S)-2-amino-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)-D-alaninate (INT-24)

Prepared using General Procedure 18: To a stirred solution of tert-butyl ((S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)-D-alaninate (INT-23) (860 mg, 1.238 mmol) in THF (30 mL) was added palladium on carbon (10 wt %) as a slurry in EtOH (4 mL). To this mixture was added acetic acid (1 mL) and the reaction mixture was hydrogenated at 4 bar pressure at room temperature. The reaction mixture was diluted with THF (50 mL) and filtered through Celite. The crude product was loaded onto a column in 5% AcOH in MeOH/THF. The column was washed with MeOH/THF/DCM and then the product was eluted with 0.7 M ammonia in MeOH/THF/DCM. The resultant mixture was concentrated in vacuo to afford 565 mg (77%) of tert-butyl ((S)-2-amino-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)-D-alaninate (INT-24) as a yellow solid. LCMS-ESI (m/z) calculated for C₃₃H₄₄N₄O₄: 560.3; no m/z observed, t_(R)=2.61 min (Method 11).

tert-butyl ((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)-D-alaninate

Prepared using General Procedure 7. To a stirred solution of tert-butyl ((S)-2-amino-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)-D-alaninate (418 mg, 0.75 mmol), 5-(tert-butyl)thiophene-2-carboxylic acid (137 mg, 0.75 mmol) in DMF (8 mL) was added TEA (208 μl, 1.49 mmol). The mixture was cooled to 0° C. and HATU (298 mg, 0.78 mmol) was added in 2 portions over 5 mins. The mixture was stirred at room temperature for 2 h. The reaction mixture was diluted with EA (150 mL) and washed with saturated aqueous NaHCO₃ (100 mL), 1N HCl (100 mL), and brine (100 mL). The organic layer was dried over MgSO₄ then concentrated. The crude product was purified by chromatography 0-30% ACN in DCM to afford 382 mg (69%) of tert-butyl ((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl) pyrimidin-2-yl)phenyl)propanoyl)-D-alaninate as a white solid. LCMS-ESI calculated for C₄₂H₅₄N₄O₅S: 726.4: no m/z observed, t_(R)=3.47 min (Method 11).

((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)-pyrimidin-2-yl)phenyl)propanoyl)-D-alamine (Compound 327)

Prepared using General Procedure 8. To a stirred solution of tert-butyl ((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl) propanoyl)-D-alaninate (375 mg, 0.495 mmol) in DCM (8 mL) was added TFA (4 mL) and the mixture was stirred at room temperature for 3 h. The reaction mixture was azetroped with toluene (2×30 mL) to give a viscous oily solid. DMSO (5 mL) was added and the solution was sonicated. To this solution was added water (60 mL) and the mixture was sonicated for 5 mins then stirred at room temperature for 20 mins. The white solid was isolated by filtration and washed with additional water (20 mL) and isohexanes (30 mL). The material was dried under vacuum, suspended in ACN (20 mL), then diluted with diethyl ether (30 mL) and stirred for 20 mins. The suspension was filtered and the wet solid was dried under vacuum to give 189.3 mg (55%) of ((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl) propanoyl)-D-alanine (Compound 327) as a white powder. LCMS-ESI (m/z) calculated for C₃₈H₄₆N₄O₅S: 670.3. found 671.0 [M+H]⁺, t_(R)=13.32 min (Method 10). The chiral purity was calculated at >99% e.e. (Chiral Method). ¹ NMR (400 MHz, DMSO-d6) δ 12.64 (s, 1H), 9.16 (s, 2H), 8.56 (d, J=8.8 Hz, 1H), 8.48 (d, J=7.4 Hz, 1H), 8.35-8.26 (m, 2H), 7.84-7.76 (m, 2H), 7.70 (d, J=3.9 Hz, 1H), 7.54-7.45 (m, 2H), 7.13-7.05 (m, 2H), 6.92 (d, J=3.8 Hz, 1H), 4.86-4.77 (m, 1H), 4.29-4.18 (m, 1H), 4.03 (t, J=6.5 Hz, 2H), 3.20-3.10 (m, 1H), 3.08-2.94 (m, 1H) 1.80-1.68 (m, 2H), 1.51-1.22 (m, 20H), 0.94-0.83 (m, 3H).

(S)-tert-butyl 1-((S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)pyrrolidine-2-carboxylate (INT-25)

Prepared using General Procedure 7. A stirred solution of (S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoic acid (INT-22) (419 mg, 0.738 mmol), (S)-tert-butyl pyrrolidine-2-carboxylate HCl (153 mg, 0.738 mmol) and TEA (257 μl, 1.845 mmol) iii DMF (6 mL) was cooled to 0° C. and HATU (295 mg, 0.775 mmol) was slowly added over 5 minutes. The reaction was stirred at room temperature for 2 h, then diluted with 1M citric acid (30 mL) and iso-hexanes (20 mL). EA (100 mL) was added and the organic layer was isolated, washed with brine (100 mL), dried with MgSO₄. The solvent was removed and the crude product was purified by chromatography 0-20% ACN in DCM to afford 436 mg (81%) of (S)-tert-butyl 1-((S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl) pyrrolidine-2-carboxylate (INT-25) as a viscous oil. LCMS-ESI (m/z) calculated for C₄₃H₅₂N₄O₆: 720.4; no m/z observed, t_(R)=11.45 min (Method 10).

(S)-tert-butyl 1-((S)-2-amino-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)pyrrolidine-2-carboxylate (INT-26)

Prepared using General Procedure 18: A solution of (S)-tert-butyl 1-((S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl) pyrrolidine-2-carboxylate (INT-25) (436 mg, 0.6 mmol) in THF (25 mL) was hydrogenated in the H-Cube using a 10% Pd/C CatCart at 60° C. (Full hydrogen, 1 mL/min). The reaction mixture was passed over the catalyst a second time at 65° C. The solvent was removed to give 307 mg (83%) of (S)-tert-butyl 1-((S)-2-amino-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)pyrrolidine-2-carboxylate (INT-26) as a white powder. LCMS-ESI (m/z) calculated for C₃₅H₄₆N₄O₄: 586.4. found 587.4 [M+H]⁺, t_(R)=6.99 min (Method 10).

(S)-tert-butyl 1-((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl) propanoyl)pyrrolidine-2-carboxylate

Prepared using General Procedure 7: A stirred solution of (S)-tert-butyl 1-((S)-2-amino-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)pyrrolidine-2-carboxylate (306 mg, 0.522 mmol) and 5-(tert-butyl)thiophene-2-carboxylic acid (106 mg, 0.574 mmol) in DMF (6 mL) was added TEA (145 μl, 1.043 mmol), cooled to 0° C., then HATU (218 mg, 0.574 mmol) was slowly added over 5 minutes. The reaction was stirred at room temperature for 2 h, then diluted with EA (70 mL), washed with saturated aqueous NaHCO₃ (70 mL) and brine (100 mL). The solvent was dried over MgSO₄ and removed. The crude product was purified by chromatography 0-30% ACN in DCM to afford 363 mg (92%) of (S)-tert-butyl 1-((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl) propanoyl)pyrrolidine-2-carboxylate as a sticky solid. LCMS-ESI (m/z) calculated for C₄₄H₅₆N₄O₅S: 752.4; no m/z observed, t_(R)=11.99 min (Method 10).

(S)-1-((S)-2-(5-(tert-butyl)thiophene-2-carboxamido-3-(4-(5-(4-(heptyloxy)-phenyl)pyrimidin-2-yl)phenyl)propanoyl)pyrrolidine-2-carboxylic acid (Compound 328)

Prepared using General Procedure 8. To a stirred solution of (S)-tert-butyl 1-((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl) propanoyl)pyrrolidine-2-carboxylate (350 mg, 0.465 mmol) in DCM (5 mL) was added TFA (5 mL) and stirred at room temperature for 2 h. The reaction mixture was diluted with toluene (10 mL) and solvent removed. The residue was dissolved in EA (50 mL), THE (5 mL) and acetone (10 mL) and washed with a mixture of saturated aqueous NaHCO₃ (10 mL) and brine (40 mL). The aqueous layer was removed and acetic acid (5 mL) was added. The organic layer was washed with brine (50 mL) and dried over MgSO₄. The solvent was removed and residual acetic acid was removed under high vacuum overnight. The material was dissolved in DCM (5 mL) and ACN (5 mL) was added. The material was stirred under a flow of air for 1 hour and the suspension was filtered and the solid washed with additional ACN (5 mL) and iso-hexanes (20 mL) to give 134 mg (41%) of (S)-1-((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)-pyrimidin-2-yl)phenyl)propanoyl)pyrrolidine-2-carboxylic acid (Compound 328) as a yellow powder. LCMS-ESI (m/z) calculated for C₄₀H₄₈N₄O₅S: 696.3. found 697.3 [M+H], t_(R)=10.59 min (Method 10). The chiral purity was calculated at >93% e.e. (Chiral Method). ¹H NMR (400 MHz, DMSO-d6) δ 12.47 (s, 1H), 9.17 (s, 2H), 8.74 (d, J=8.3 Hz, 1H), 8.38-8.27 (m, 2H), 7.86-7.76 (m, 2H), 7.71 (d, J=3.9 Hz, 1H), 7.57-7.48 (m, 2H), 7.14-7.02 (m, 2H), 6.92 (d, J=3.9 Hz, 1H), 4.94-4.86 (m, 1H), 4.33-4.27 (m, 1H), 4.04 (t, J=6.5 Hz, 2H), 3.86-3.74 (m, 1H), 3.69-3.59 (m, 1H), 3.19-3.01 (m, 2H), 2.24-2.13 (m, 1H), 2.01-1.84 (m, 3H), 1.80-1.68 (m, 2H), 1.52-1.23 (m, 17H), 0.93-0.85 (m, 3H).

Compounds 329-350 were prepared from (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl) propanoic acid (Compound 192) using General Procedures 3 or 7 followed by 4 or 8.

Compounds 351-368 were prepared from (S)-3-(4-(5-(4-(tert-butyl)phenyl)pyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoic acid (Compound 165) using General Procedures 7 followed by 4 or 8.

Compound 369 was prepared from (S)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)-2-(1-isopropyl-1H-pyrazole-4-carboxamido)propanoic acid (Compound 139) using General Procedures 7 followed by 8.

Compound 370 was prepared from (S)-3-(4-(5-(4-(tert-butyl)phenyl)pyrimidin-2-yl)phenyl)-2-(1-isopropyl-1H-pyrazole-4-carboxamido)propanoic acid (Compound 167) using General Procedures 7 followed by 8.

Compound 371 was prepared from (S)-2-(5-(tert-butyl)thiazole-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 142) using General Procedures 7 followed by 8.

Compound 372 was prepared from (S)-2-(1-(tert-butyl)-1H-pyrazole-4-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 143) using General Procedures 7 followed by 8.

Compound 373 was prepared from (R)-3-(4-(5-(4-(tert-butyl)phenyl)pyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoic acid (Compound 182) using General Procedures 7 followed by 8.

Compounds 374-379 were prepared from (R)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 193) using General Procedures 3 or 7 followed by 4 or 8.

Compound 380 was prepared from (R)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 191) using General Procedures 7 followed by 8.

(S)-4-(tert-butyl)-N-(3-(4-(5-(4-(heptyl)phenyl)pyrimidin-2-yl)phenyl)-1-((2-(methylsulfonamido)-2-oxoethyl)amino)-1-oxopropan-2-yl)benzamide (Compound 381)

TEA (32.1 μl, 0.23 mmol) was added to a suspension of (S)-(2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)glycine (Compound 297) (75.0 mg, 0.11 mmol), methanesulfonamide (12.1 mg, 0.13 mmol), HATU (52.6 mg, 0.14 mmol) and DMAP (1.41 mg, 0.01 mmol) were combined in DCM (2 mL). The resultant yellow suspension was stirred at room temperature for 3 h. The reaction mixture was washed with saturated aqueous NaHCO₃ (2 mL) and the mixture passed through a phase separation cartridge. The organic phase was concentrated in vacuo to afford a yellow solid. The crude product was purified by chromatography (EA/1% AcOH in hexanes) to afford 9 mg (11%) (S)-4-(tert-butyl)-N-(3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)-1-((2-(methylsulfonamido)-2-oxoethyl)amino)-1-oxopropan-2-yl)benzamide (Compound 381) as a yellow solid. LCMS-ESI (m/z) calculated for C₄₀H₄₉N₅O₆S: 727.3. found 728.0 [M+H]⁺, t_(R)=10.51 min (Method 10).

Compounds 382-390 were prepared from (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl) propanoic acid (Compound 192) using the appropriate combination of General Procedures 4, 7, and 8 as needed.

ethyl 2-amino-3-(3-fluoro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propanoate

To a stirred solution of ethyl 2-((diphenylmethylene)amino)acetate (300 mg, 1.12 mmol) in anhydrous THF (3 mL) at −78° C. was added 0.5 M KHMDS in toluene (2.46 mL, 1.23 mmol). After stirring for 15 min, 2-(4-(bromomethyl)-2-fluorophenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (353 mg, 1.12 mmol) was added. The reaction mixture was stirred at −78° C. for 3 h and warmed to −20° C. To the mixture was added 6 N Hydrochloric acid (0.5 mL) and the mixture was stirred overnight at room temperature. The reaction mixture was diluted with water (5 mL) and 1 N HCl (5 mL) and then extracted with diethyl ether. The aqueous layer was basified with 1N NaOH and then extracted with EtOAc (3×10 mL). The combined organic extract was washed with water, brine and then dried over MgSO₄. Filtration and concentration gave 177 mg (46%) of ethyl 2-amino-3-(3-fluoro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propanoate which was used in the next step without purification. LCMS-ESI (m/z) calculated for C₁₇H₂₅BFNO₄: 337.2. found 338.2 [M+H]⁺, t_(R)=2.78 min (Method 1).

Compound 391 was prepared using ethyl 2-amino-3-(3-fluoro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propanoate and 5-(tert-butyl)thiophene-2-carbonyl chloride using General Procedure 3 followed by treatment with 5-(tert-butyl)phenyl)-2-iodopyrimidine and General Procedure 10.

Compounds 392-396 were prepared from (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl) propanoic acid (Compound 192) using, as needed, the appropriate combination of General Procedures 4, 7, and 8.

(S)-2-(4-(3-(tert-butoxy)-2-(4-(tert-butyl)benzamido)-3-oxopropyl)phenyl)-pyrimidine-5-carboxylic acid

Prepared using General Procedure 10. Into an oven-dried vial containing lithium formate (58 mg (1.1 mmol) in DMF (5 mL) were added DIEA (400 μL 2.2 mmol) and acetic anhydride (210 μL, 2.2 mmol). After stirring for 1 h, the reaction mixture was degassed by N₂ bubbling. A second, degassed solution containing tert-butyl (S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(4-(tert-butyl)benzamido)propanoate (INT-14) (200 mg, 0.4 mmol) and PdCl₂(dppf) (27 mg, 0.04 mmol) in DMF (5 mL) was added via cannula. The resulting mixture was heated for 1 h at 120° C. in a microwave reactor. The reaction mixture was diluted with 10% citric acid and extracted with EA. The organic extract was dried (Na₂SO₄), concentrated, and purified by chromatography (EA/hexane) to provide 166 mg (88%) of (S)-2-(4-(3-(tert-butoxy)-2-(4-(tert-butyl)benzamido)-3-oxopropyl)phenyl)pyrimidine-5-carboxylic acid as a brown solid. LCMS-ESI (m/z) calculated for C₂₉H₃₃BN₃O₅: 503.6. found 504.2 [M+H]⁺, t_(R)=3.87 min (Method 1). ¹H NMR (400 MHz, CDCl₃) δ 9.24 (s, 2H), 8.42 (d, J=8.2 Hz, 2H), 7.75 (t, J=11.9 Hz, 2H), 7.45 (d, J=8.4 Hz, 2H), 7.34 (d, J=8.2 Hz, 2H), 6.91 (t, J=11.5 Hz, 1H), 5.12 (dd, J=12.9, 5.5 Hz, 1H), 3.32 (qd, J=13.8, 5.4 Hz, 2H), 1.50 (s, 9H), 1.29 (d, J=29.8 Hz, 9H).

tert-butyl (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(2-heptanoylhydrazine-1-carbonyl)pyrimidin-2-yl)phenyl)propanoate

Prepared using General Procedure 7. Into a stilling solution of (S)-2-(4-(3-(tert-butoxy)-2-(4-(tert-butyl)benzamido)-3-oxopropyl)phenyl)pyrimidine-5-carboxylic acid (50 mg, 0.10 mmol) in DCM (2 mL) were added EDC (34 mg, 0.20 mmol), DMAP (3 mg, 0.02 mmol) and heptanohydrazide (16 mg, 0.11 mmol). After 18 h, the reaction mixture was diluted with NaHCO₃ and extracted with DCM (2×). The organic layers were combined, dried (Na₂SO₄), concentrated and purified by chromatography (EA/Hexane) to provide 38 mg (61%) of tert-butyl (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(2-heptanoylhydrazine-1-carbonyl)pyrimidin-2-yl)phenyl)propanoate. LCMS-ESI (m/z) calculated for C₃₆H₄₇BN₅O: 629.8; no m/z observed, t_(R)=3.84 min (Method 1). ¹H NMR (400 MHz, CDCl₃) δ 9.17 (s, 2H), 8.42 (d, J=8.2 Hz, 2H), 7.69 (d, J=8.4 Hz, 2H), 7.43 (d, J=8.4 Hz, 2H), 7.34 (d, J=8.2 Hz, 2H), 6.70 (d, J=7.3 Hz, 1H), 5.01 (dd, J=12.6, 5.8 Hz, 1H), 3.41-3.20 (m, 2H), 2.35 (t, J=7.5 Hz, 2H), 1.81-1.61 (m, 2H), 1.59 (d, J=14.0 Hz, 2H), 1.45 (s, 4H), 1.42-1.22 (m, 18H), 0.88 (t, J=6.8 Hz, 3H).

tert-butyl (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(5-hexyl-1,3,4-thiadiazol-2-yl)pyrimidin-2-yl)phenyl)propanoate

To a solution of tert-butyl (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(2-heptanoylhydrazine-1-carbonyl)pyrimidin-2-yl)phenyl)propanoate (38 mg, 0.06 mmol) in THF (1.5 mL) was added 2,4-bis(4-methoxyphenyl)-1,3,2,4-dithiadiphosphetane 2,4-disulfide (24 mg, 0.06 mmol). After 1.5 h, the reaction mixture was concentrated and purified by preparative HPLC to provide 10 mg (27%) of tert-butyl (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(5-hexyl-1,3,4-thiadiazol-2-yl) pyrimidin-2-yl)phenyl) propanoate. LCMS-ESI (m/z) calculated for C₃₆H₄₅N₅O₅S: 627.9; no m/z observed, t_(R)=3.89 min (Method 1). ¹H NMR (400 MHz, CDCl₃) δ 9.29 (s, 2H), 8.44 (d, J=8.2 Hz, 2H), 7.75-7.66 (m, 2H), 7.50-7.41 (m, 2H), 7.35 (d, J=8.3 Hz, 2H), 6.68 (d, J=7.3 Hz, 1H), 5.02 (dd, J=12.7, 5.6 Hz, 1H), 3.33 (qd, J=13.8, 5.5 Hz, 2H), 3.26-3.15 (m, 2H), 1.87 (dt J=15.3, 7.6 Hz, 2H), 1.46 (d, J=5.1 Hz, 10H), 1.41-1.23 (m, 14H), 0.96-0.85 (m, 3H).

(S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(5-hexyl-1,3,4-thiadiazol-2-yl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 397)

Prepared using General Procedure 8 from tert-butyl (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(5-hexyl-1,3,4-thiadiazol-2-yl) pyrimidin-2-yl)phenyl) propanoate. LCMS-ESI (m/z) calculated for C₃₂H₃₇N₅O₃S: 571.4. found 571.7 [M+H]⁺, t_(R)=10.66 min (Method 2). ¹H NMR (400 MHz, CDCl₃) δ 9.30 (d, J=2.6 Hz, 2H), 8.48 (d, J=8.2 Hz, 2H), 7.67 (d, J=8.4 Hz, 2H), 7.43 (dd, J=13.7, 8.3 Hz, 4H), 6.61 (d, J=6.8 Hz, 1H), 5.20-5.04 (m, 1H), 3.45 (ddd, J=36.2, 13.9, 5.6 Hz, 2H), 3.20 (t, J=7.6 Hz, 2H), 1.95-1.75 (m, 2H), 1.54-1.36 (m, 2H), 1.39-1.19 (m, 13H), 0.91 (t, J=7.0 Hz, 3H).

(R)-tert-butyl 2-((S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanamido)propanoate

Prepared using General Procedure 7. A stirred solution of (R)-tert-butyl 2-((S)-2-amino-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanamido)propanoate (122 mg, 0.218 mmol), 4-(tert-butyl)benzoic acid (38.8 mg, 0.218 mmol) and TEA (60.7 μl, 0.435 mmol) in DMF (4 mL) was cooled to 0° C. and HATU (87 mg, 0.228 mmol) was slowly added over 5 minutes. The reaction was stirred at room temperature for 2 h, then diluted with EA (100 mL), washed with saturated aqueous NaHCO₃ (100 mL) and brine (100 mL). The solvent was dried over MgSO₄ and removed. The crude product was purified by chromatography 0-30% ACN in DCM to afford 123 mg (78%) of (R)-tert-butyl 2-((S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanamido)propanoate as a white solid. LCMS-ESI (m/z) calculated for C₄₄H₅₆N₄O₅: 720.4; no m/z observed. t_(R)=3.47 min (Method 11).

(R)-2-((S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanamido)propanoic acid (Compound 398)

Prepared using General Procedure 8. To a stirred solution of (R)-tert-butyl 2-((S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanamido)propanoate (120 mg, 0.166 mmol) in DCM (4 mL) was added TFA (3 mL) and stirred for 2 h. The reaction mixture was diluted with toluene (15 mL) and solvent removed. DMSO (3 mL) was added and the solution was sonicated. This solution was added to vigorously stirring water (30 mL) and the white solid was isolated by filtration and washed with additional ACN (10 mL). The material was dried under high vacuum for 24 h to afford 75 mg (66%) of (R)-2-((S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanamido)propanoic acid (Compound 398) as a white powder. LCMS-ESI (m/z) calculated for C₄₀H_(4s)N₄O₅: 664.4. found 665.0 [M+H]⁺, t_(R)=12.33 min (Method 10). The chiral purity was calculated at >99% e.e. (Chiral Method). ¹H NMR (400 MHz, DMSO-d6) δ 12.64 (s, 1H), 9.15 (s, 2H), 8.52 (d, J=8.7 Hz, 1H), 8.45 (d, J=7.4 Hz, 1H), 8.35-8.20 (m, 2H), 7.85-7.68 (m, 4H), 7.56-7.50 (m, 2H), 7.49-7.39 (m, 2H), 7.14-7.03 (m, 2H), 4.93-4.80 (m, 1H), 4.38-4.17 (m, 1H), 4.03 (t, J=6.5 Hz, 2H), 3.22-3.12 (m, 1H), 3.12-3.02 (m, 1H), 1.81-1.67 (m, 2H), 1.53-1.24 (m, 20H), 0.95-0.80 (m, 3H).

Compounds 399, 400, and 409 were prepared from (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 85) using, as needed, the appropriate combination of General Procedures 4, 7, 8, and 18.

Compounds 401-408 were prepared from (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 192) using, as needed, the appropriate combination of General Procedures 4, 7, 8, and 18.

(S)-4-amino-2-((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanamido)butanoic acid (Compound 410)

Prepared using General Procedures 7,4, and 8: A stirring solution of (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 192) (25 mg, 0.042 mmol), (S)-methyl 2-amino-4-((tert-butoxycarbonyl)amino)butanoate hydrochloride (12 mg, 0.042 mmol), and TEA (0.015 mL, 0.105 mmol) at 0° C. was treated with HATU (17 mg, 0.046 mmol) in DMF (1 mL). The solution was stirred at room temperature for 18 h. The reaction mixture was diluted with DCM (5 mL) and washed with saturated aqueous NaHCO₃ (5 mL), water (5 mL), and brine (5 mL). The organic phase was dried over MgSO₄, filtered, and concentrated to afford the methyl ester intermediate. The ester was dissolved in THF (2 mL) and MeOH (1 mL) and 1 N aqueous NaOH (0.1 ml, 0.1 mmol) was added. The solution was stirred at 60° C. for 5 h. The reaction mixture was concentrated then dissolved in DCM (0.5 mL) and treated with 1N HCl in ether (0.42 mL, 0.42 mmol). The reaction was stirred at 27° C. for 18 h. The compound was purified by preparative HPLC to afford 21 mg (60.0%) of (S)-4-amino-2-((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanamido)butanoic acid (Compound 410) as the trifluoroacetate salt. LCMS-ESI (m/z) calculated for C₃₉H₄₉N₅O₅S: 699.4. found 700.3 [M+H]⁺, t_(R)=9.24 min (Method 12). ¹H NMR (400 MHz, DMSO) δ 12.95 (s, 1H), 9.15 (s, 2H), 8.63-8.55 (m, 2H), 8.32 (d, J=8.1 Hz, 2H), 7.78 (d, J=8.7 Hz, 2H), 7.76-7.63 (m, 4H), 7.51 (d, J=8.2 Hz, 2H), 7.09 (d, J=8.7 Hz, 2H), 6.91 (d, J=3.7 Hz, 1H), 4.87-4.66 (m, 1H), 4.50-4.31 (m, 1H), 4.03 (t, J=6.5 Hz, 2H), 3.23-3.12 (m, 1H), 3.12-3.00 (m, 1H), 2.95-2.77 (m, 2H), 2.18-2.02 (m, 1H), 2.02-1.84 (m, 1H), 1.83-1.64 (m, 2H), 1.50-1.38 (m, 2H), 1.38-1.14 (m, 15H), 0.87 (t, J=6.7 Hz, 3H).

Compounds 411, 412, 414-416, 424-432, 438, and 439 were prepared from (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl) phenyl) propanoic acid (Compound 192) using, as needed, the appropriate combination of General Procedures 4, 7, 8, and 18.

Compounds 413, 417, 418, and 440 were prepared from (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 85) using, as needed, the appropriate combination of General Procedures 4, 7, 8, and 18.

Compounds 419-423 and 435 were prepared from (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl) propanoic acid (Compound 192) in a similar fashion to (S)-4-(tert-butyl)-N-(3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)-1-((2-(methylsulfonamido)-2-oxoethyl)amino)-1-oxopropan-2-yl)benzamide (Compound 381).

Compounds 433, 436, and 437 were prepared from (R)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoic acid (R-Compound 85) using General Procedures 7 and 8.

Compound 434 was prepared from methyl (S)-2-(N-(2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)sulfamoyl)acetate (Compound 422) using General Procedure 4.

Compounds 441 and 442 were prepared from (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl) propanoic acid (Compound 192) using General Procedures 3 and 8.

Compound 443 was prepared from tert-butyl (S)-3-(2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-hydroxyphenyl)pyrimidin-2-yl)phenyl)propanamido)propanoate using General Procedures 12 then 8.

Compounds 444-455 were prepared using, as needed, the appropriate combination of General Procedures 4, 7, 8, and 18.

Compounds 456-458 were prepared from tert-butyl (S)-3-(2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-hydroxyphenyl)pyrimidin-2-yl)phenyl)propanamido)propanoate using General Procedures 12 then 8.

Compounds 459-464 were prepared from (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl) propanoic acid (Compound 192) using, as needed, the appropriate combination of General Procedures 4, 7, and 8.

Compounds 465-466 were prepared from (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 85) using, as needed, the appropriate combination of General Procedures 4, 7, and 8.

2-((S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanamido)-3-(1H-1,2,4-triazol-1-yl)propanoic acid (Compound 467)

Prepared using General Procedure 7 and then 4. (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoic acid (90 mg, 0.152 mmol) and (S)-methyl 2-amino-3-(1H-1,2,4-triazol-1-yl)propanoate (25.8 mg, 0.152 mmol) in DMF (2.5 mL) was added TEA (52.8 μl, 0.379 mmol) and then cooled to 0° C. To this mixture was added HATU (57.6 mg, 0.152 mmol) and left at room temperature for 2 h. The reaction mixture was quenched by the addition of 0.1 M Citric acid (aq. 15 mL) and the solid precipitated was allowed to slurry for 30 mins. The solid was filtered, washed with water (10 mL), isohexanes (10 mL) and then dried. Then the solid was dissolved in mixture of THF (4 mL) and MeOH (2 mL). To this solution was added 2M aq. NaOH (380 μL, 0.76 mmol) and the mixture was stirred vigorously at room temperature for 1 h. The reaction mixture was diluted with 0.1 M aq. citric acid (20 mL) and stirred for 1 h. The solid formed was filtered and washed with water (10 mL) and isohexanes (10 mL). The crude product was purified by column chromatography (0-20% MeOH in EA) to afford 12 mg (11%) of 2-((S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanamido)-3-(1H-1,2,4-triazol-1-yl)propanoic acid (Compound 467) as a white powder. LCMS-ESI (m/z) calculated for C₄₂H₄₉N₇O₅: 731.9; no m/z observed, t_(R)=9.75 min (Method 10). ¹H NMR (400 MHz, DMSO-d6) δ13.21 (s, 1H), 9.20 (s, 2H), 8.70 (d, J=8.1 Hz, 0.5H), 8.60 (dd, J 8.4, 4.6 Hz, 1H), 8.56 (d, J=7.8 Hz, 0.5H), 8.52 (d, J=7.1 Hz, 1H), 8.37-8.34 (m, 2H), 8.01 (d, J=6.9 Hz, 1H), 7.85-7.82 (m, 2H), 7.80-7.78 (m, 2H), 7.56-7.49 (m, 4H), 7.14 (d, J=8.9 Hz, 2H), 4.87-4.74 (m, 2H), 4.71-4.55 (m, 2H), 4.08 (t, J=6.5 Hz, 2H), 3.24-2.97 (m, 2H), 1.82-1.75 (m, 2H), 1.51-1.29 (m, 17H), 0.95-0.91 (m, 3H).

Compounds 468 and 469 were prepared from (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 85) using, as needed, the appropriate combination of General Procedures 4, 7 and 8.

Compound 470 was prepared from (S)-tert-butyl 2-amino-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoate (INT-9) using General Procedures 7 and 8.

(S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(4-(tert-butyl)benzamido)propanoic acid (INT-27)

Prepared using General Procedure 8. LCMS-ESI (m/z) calculated for C₂₄H₂₄BrN₃O₃: 482.3. found 481.1 [M−H]⁺, t_(R)=2.6 min (Method 15), and 98.7% e.e. (Chiral Method, isocratic with 2% Solvent A, 98% Solvent B). ¹H NMR (400 MHz, CDCl₃) δ 8.87 (s, 2H), 8.32 (d, J=8.3 Hz, 2H), 7.64 (d, J=8.5 Hz, 2H), 7.45 (d, J=8.5 Hz, 2H), 7.36 (d, J=8.3 Hz, 2H), 6.64 (d, J=6.9 Hz, 1H), 5.16 (dd, J=12.7, 5.7 Hz, 1H), 3.42 (ddd, J=38.8, 14.0, 5.7 Hz, 2H), 1.32 (s, 9H).

tert-butyl (S)-3-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(4-(tert-butyl)-benzamido)propanamido)propanoate (INT-28)

Prepared using General Procedure 7. A stirring solution of β-alanine tert-butyl ester hydrochloride (4.9 g, 27.4 mmol), (S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(4-(tert-butyl)benzamido)propanoic acid (12.0 g, 24.9 mmol) and DIEA (11.1 mL, 62.0 mmol) in DMF (200 mL) was cooled to 0° C. A solution of HATU (9.9 g, 26.1 mmol) in DMF (75 mL) was added dropwise over 20 min. The reaction mixture was allowed to warm to room temperature over 2 h, then diluted with EA and washed with NaHCO₃ (sat aq). The aqueous fraction was back-extracted with EA. The combined organic fractions were dried (Na₂SO₄) then concentrated onto celite and purified by column chromatography (EA/hexane) to provide 11 g (65%) of tert-butyl (S)-3-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(4-(tert-butyl)benzamido)propanamido)propanoate (INT-28). LCMS-ESI (m/z) calculated for C₃₁H₃₇BrN₄O₄; 609.6. found 610.2 [M+H]⁺, t_(R)=3.99 min (Method 15), and 87.1% e.e. (Chiral Method, isocratic with 20% Solvent A, 80% Solvent B). ¹H NMR (400 MHz, CDCl₃) δ8.80 (s, 2H), 8.32 (t, J=6.5 Hz, 2H), 7.74-7.62 (m, 2H), 7.41 (d, J=8.5 Hz, 2H), 7.35 (t, J=7.9 Hz, 2H), 6.91 (d, J=7.7 Hz, 1H), 6.53 (t, J=5.9 Hz, 1H), 4.93-4.81 (m, 1H), 3.52-3.34 (m, 2H), 3.34-3.14 (m, 2H), 2.46-2.24 (m, 2H), 1.34 (d, J=5.2 Hz, 9H), 1.31 (d, J=5.2 Hz, 9H).

tert-butyl (S)-3-(2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-hydroxyphenyl)-pyrimidin-2-yl)phenyl)propanamido)propanoate (INT-29)

Prepared using General Procedure 10 from tert-butyl (S)-3-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(4-(tert-butyl)benzamido)propanamido)propanoate and 4-hydroxyphenyl boronic acid. LCMS-ESI (m/z) calculated for C₃₇H₄₂BN₄O₅: 622.8. found 621.3 [M−H]⁺, t_(R)=3.53 min. (Method 15), and 80.1% e.e. (Chiral Method, isocratic with 20% Solvent A, 80% Solvent B). ¹H NMR (400 MHz, CDCl₃) δ 8.96 (s, 2H), 8.42 (d, J=8.0 Hz, 2H), 7.70 (d, J=8.2 Hz, 2H), 7.56-7.32 (m, 6H), 6.95 (d, J=8.2 Hz, 2H), 6.82 (d, J=7.6 Hz, 1H), 6.35 (s, 1H), 4.88 (d, J=6.9 Hz, 1H), 3.46 (s, 2H), 3.39-3.12 (m, 2H), 2.48-2.15 (m, 2H), 1.36 (s, 9H), 1.33 (s, 9H).

Compound 471 was prepared from tert-butyl (S)-3-(2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-hydroxyphenyl)pyrimidin-2-yl)phenyl)propanamido)propanoate using General Procedures 12 then 8.

tert-butyl (S)-3-(2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-((5-methylhexyl)oxy)phenyl)pyrimidin-2-yl)phenyl)propanamido)propanoate

Prepared using General Procedure 12 from tert-butyl (S)-3-(2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-hydroxyphenyl)pyrimidin-2-yl)phenyl)propanamido)propanoate and 1-bromo-5-methyl hexane. LCMS-ESI (m/z) calculated for C₄₄H₅₆N₄O₅: 720.9. found 721.4 [M+H]⁺, t_(R)=5.39 min. (Method 16).

(S)-3-(2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-((5-methylhexyl)oxy)phenyl)-pyrimidin-2-yl)phenyl)propanamido)propanoic acid (Compound 472)

Prepared using General Procedure 8 from tert-butyl (S)-3-(2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-((5-methylhexy)oxy)phenyl)pyrimidin-2-yl)phenyl)propanamido)propanoate. LCMS-ESI (m/z) calculated for C₄₀H₄₅N₄O₅: 664.9. found 664.8 [M+H]⁺, t_(R)=10.32 min. (Method 14).

Compound 473 was prepared from tert-butyl (S)-3-(2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-hydroxyphenyl)pyrimidin-2-yl)phenyl)propanamido)-propanoate using General Procedures 12 then 8.

tert-butyl (S)-3-(2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(2-cyclohexylethoxy)-phenyl)-pyrimidin-2-yl)phenyl)propanamido)propanoate

Prepared using General Procedure 12 from tert-butyl (S)-3-(2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-hydroxyphenyl)pyrimidin-2-yl)phenyl)propanamido)propanoate and (2-bromoethyl)cyclohexane. LCMS-ESI (m/z) calculated for C₄₅H₅₆N₄O₅: 732.9. found 733.5 [M+H]⁺, t_(R)=5.59 min. (Method 16).

(S)-3-(2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(2-cyclohexylethoxy)phenyl)-pyrimidin-2-yl)phenyl)propanamido)propanoic acid (Compound 474)

Prepared using General Procedure 8 from tert-butyl (S)-3-(2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(2-cyclohexylethoxy)phenyl)pyrimidin-2-yl)phenyl)propanamido)propanoate. LCMS-ESI (m/z) calculated for C₄₁H₄₈N₄O₅: 676.9 found 677.4 [M+H]⁺, t_(R)=10.61 min. (Method 14).

Compounds 475 and 476 were prepared from (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 85) using General Procedures 7, 4, then 8.

4-benzyl 1-(tert-butyl) ((S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)-phenyl)-pyrimidin-2-yl)phenyl)propanoyl)-L-aspartate (INT-30)

Prepared using General Procedure 7: To a stirred solution of (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 85) (594 mg, 1.00 mmol), L-aspartic acid β-benzyl ester α-tert-butyl ester hydrochloride (398.4 mg, 1.20 mmol) in DMF (6 mL) was added DIEA (554 μl, 3.00 mmol). The mixture was cooled to 0° C. and HATU (418 mg, 1.10 mmol) in DMF (4 mL) was added over 5 mins. The mixture was stirred at 0° C. for 1 h. The reaction mixture was added to water (200 mL) and the precipitate was filtered. The precipitate was dissolved in DCM (20 mL), dried over MgSO₄, and concentrated. The crude product was purified by chromatography 0-100% EA in hexane to afford 751 mg (88%) of 4-benzyl 1-(tert-butyl) ((S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)-L-aspartate (INT-30) as a white solid. LCMS-ESI (m/z) calculated for C₅₂H₆₂N₄O₇: 854.5. found 855.5 [M+H]⁺, t_(R)=6.22 min (Method 16).

(S)-4-(tert-butoxy)-3-((S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)-phenyl)-pyrimidin-2-yl)phenyl)propanamido)-4-oxobutanoic acid (INT-31)

Prepared using General Procedures 18: To 4-benzyl 1-(tert-butyl) ((S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)-L-aspartate (INT-30) (50 mg, 0.058 mmol) in THF (2 mL) was added 10% Pd/C (10 mg). The reaction vessel was flushed with hydrogen gas and the reaction was stirred vigorously under hydrogen for 2 h at room temperature. The reaction mixture was filtered to remove the catalyst and the solvent was removed to give 38 mg (86%) of (S)-4-(tert-butoxy)-3-((S)-2-(4-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanamido)-4-oxobutanoic acid (INT-31) as a white solid. LCMS-ESI (m/z) calculated for C₄₅H₅₆N₄O₇: 764.4. found 765.4 [M+H]⁺, t_(R)=4.24 min (Method 16).

N²—((S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)-N⁴-methyl-L-asparagine (Compound 477)

Prepared using General Procedure 7 and 8: To a stirred solution of (S)-4-(tert-butoxy)-3-((S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanamido)-4-oxobutanoic acid (19 mg, 0.025 mmol), methylamine (40 wt % in water, 5.8 μL, 0.075 mmol) in DMF (0.25 mL) was added DIEA (13.8 μl, 0.075 mmol). The mixture was cooled to 0° C. and HATU (19 mg, 0.05 mmol) was added. The mixture was stirred at room temperature for 18 h. The reaction mixture was added to water (2 mL) and the precipitate was filtered. The precipitate was dissolved in DCM (2 mL), dried over MgSO₄, and concentrated. The crude ester was dissolved in DCM (1 mL) and TFA (0.2 mL) was added. The reaction was stirred overnight. The solvent was removed and the crude material was purified by preparative HPLC to afford 5 mg (25%) of N²—((s)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)-N⁴-methyl-L-asparagine (Compound 477). LCMS-ESI (m/z) calculated for C₄₂H₅₁N₅O₆; 721.4. found 722.4 [M+H}⁺, t_(R)=8.67 min (Method 14). ¹H NMR (400 MHz, DMSO) δ 12.62 (s, 1H), 9.14 (s, 2H), 8.53 (d, J=8.5 Hz, 1H), 8.36 (d, J=7.9 Hz, 1H), 8.29 (d, J=8.2 Hz, 2H), 7.86 (d, J=4.6 Hz, 1H), 7.78 (d, J=8.7 Hz, 2H), 7.72 (d, J=8.3 Hz, 2H), 7.51 (d, J=8.3 Hz, 2H), 7.44 (d, J=8.4 Hz, 2H), 7.08 (d, J=8.8 Hz, 2H), 4.89-4.73 (m, 1H), 4.66-4.53 (m, 1H), 4.03 (t, J=6.5 Hz, 3H), 3.26-3.18 (m, 1H), 3.11-3.00 (m, 1H), 2.64-2.53 (m, 5H), 1.80-1.67 (m, 2H), 1.51-1.38 (m, 2H), 1.38-1.21 (m, 15H), 0.87 (t, J=6.8 Hz, 3H).

Compounds 478-487 were prepared from (S)-4-(tert-butoxy)-3-((S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanamido)-4-oxobutanoic acid using General Procedures 7 and 8.

Compound 488 was prepared from (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 85) using General Procedures 7 and 4.

Compounds 489 and 490 were prepared from tert-butyl (S)-3-(2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-hydroxyphenyl)pyrimidin-2-yl)phenyl)propanamido)propanoate using General Procedures 12 then 8.

Compound 491 was prepared from (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 85) using General Procedures 7 then 4.

tert-butyl ((S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(4-(tert-butyl)benzamido)-propanoyl)-D-alaninate (INT-32)

To a stirring solution of (S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(4-(tert-butyl)benzamido)propanoic acid (INT-27) (1.50 g, 3.10 mmol) in DMF (15 mL) were added tert-butyl D-alaninate (680.0 mg, 3.73 mmol) and Et₃N (802.3 mg, 6.2 mmol). The reaction was stirred for 1 hour at 0° C. and then HATU (877.5 mg, 3.37 mmol) in 2 mL DMF was added. The reaction was stirred for 1 hour at 0° C. and then warmed to room temperature with stirring for 18 hours. The reaction solution was extracted with aqueous NaHCO₃ (3×20 mL). The combined organics were dried over MgSO₄ and evaporated. The crude product was purified by column chromatography (50%) EA in hexanes) to afford 1.44 g (76%) of tert-butyl ((S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(4-(tert-butyl)benzamido)-propanoyl)-D-alaninate (INT-32) as a solid powder. LCMS-ESI (m/z) calculated for C₃₁H₃₇BrN₄O₄: 609.6. found 610.2 [M+H]⁺, t_(R)=4.05 min. (Method 16). ¹H NMR (400 MHz, DMSO) δ 9.03 (s, 2H), 8.49 (d, J=8.7 Hz, 1H), 8.41 (d, J=7.2 Hz, 1H), 8.24 (d, J=8.2 Hz, 2H), 7.73 (t, J=7.4 Hz, 2H), 7.54-7.37 (m, 4H), 4.85 (td, J=10.1, 4.6 Hz, 1H), 4.16 (t, J=7.2 Hz, 1H), 3.24-2.97 (m, 2H), 1.50-1.29 (m, 9H), 1.32-1.17 (m, 12H).

(S)-2-(4-(3-((3-(tert-butoxy)-3-oxopropyl)amino)-2-(4-(tert-butyl)benzamido)-3-oxopropyl)phenyl)pyrimidine-5-carboxylic acid (INT-33)

Prepared using General Procedure 19. Oven-dried lithium formate (136 mg, 2.6 mmol), DIEA (700 μL, 3.9 mmol), and Ac₂O (370 μL, 3.9 mmol) were dissolved in anhydrous DMF (10 mL) in a flame-dried flask under N₂. After stirring for 30 min, the solution was degassed via N₂ bubbling. In a separate flask, tert-butyl (S)-3-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(4-(tert-butyl)benzamido)propanamido)propanoate (INT-28) (400 mg, 0.7 mmol, azeotropically dried from THF) was dissolved in DMF (10 mL) and degassed via N₂ bubbling. Into the INT-28 solution was added PdCl₂(dppf) (48 mg, 0.07 mmol) and the resulting solution was transferred via cannula into the lithium formate solution. The flask was sealed and heated at 120° C. for 4 h in a microwave reactor. The reaction mixture was diluted with EA (250 mL) and washed with 10% citric acid (250 mL) and then washed with H₂O (250 mL) and purified by chromatography (EA/hexanes) to afford 400 mg (99%) of (S)-2-(4-(3-((3-(tert-butoxy)-3-oxopropyl)amino)-2-(4-(tert-butyl)benzamido)-3-oxopropyl)phenyl)pyrimidine-5-carboxylic acid (INT-33). LCMS-ESI (m/z) calculated for C₃₂H₃₈N₄O₆: 574.7. found 575.3 [M+H]⁺, t_(R)=2.41 min. (Method 15).

methyl 2-(4-bromophenyl)-2-(4-(tert-butyl)benzamido)acetate

Prepared using General Procedure 7. To a stirring solution of methyl 2-amino-2-(4-bromophenyl)acetate (421 mg, 1.5 mmol), 4-(tert-butyl)benzoic acid (321 mg, 1.8 mmol), and DIEA (831 μl, 4.5 mmol) in DMF (3 mL) cooled to 0° C. was slowly added a solution of HATU (380 mg, 1.65 mmol) in DMF (1.5 mL) in a drop-wise fashion. The reaction mixture was allowed to warm slowly and stirring continued for 4 h. The reaction mixture was poured onto ice-water and the solid was filtered. The solid was dissolved in DCM (10 mL), dried over MgSO₄ and evaporated to afford 532 mg (88%) of methyl 2-(4-bromophenyl)-2-(4-(tert-butyl)benzamido)acetate. LCMS-ESI (m/z) calculated for C₂₀H₂₂BrNO₃: 403.0. found 404.1 [M+H]⁺, t_(R)=3.61 min. (Method 16).

methyl 2-(4-(tert-butyl)benzamido)-2-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)acetate (INT-34)

Prepared using General Procedure 10. A solution of methyl 2-(4-bromophenyl)-2-(4-(tert-butyl)benzamido)acetate (202 mg, 0.5 mmol), KOAc (147 mg, 1.5 mmol) and 4,4,4′,4′,5,5,5′,5′-octamethyl-2,2′-bi(1,3,2-dioxaborolane) (165 mg, 0.65 mmol) in DMSO (3 mL) was de-gassed. PdCl₂dppf (18 mg, 0.025 mmol) was added and the mixture was heated at 90° C. for 1.5 h. The crude reaction mixture was poured onto ice-water and the solid was filtered. The solid was dissolved in DCM (5 mL), dried over MgSO₄, evaporated and purified by chromatography (EA/hexane) to provide 71 mg (31%) of methyl 2-(4-(tert-butyl)benzamido)-2-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)acetate (INT-34). LCMS-ESI (m/z) calculated for C₂₆H₃₄BNO₅: 451.3. found 452.2 [M+H]⁺, t_(R)=3.83 min (Method 16).

(S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2 carboxamido)-propanoic acid

To a stirring solution of tert-butyl (S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoate (INT-17) (15.7 g, 28.8 mmol) in DCM (30 mL) was treated with TFA (30.0 g, 263.1 mmol). The reaction mixture was stirred at room temperature for 18 hours to complete. The solvent was evaporated and then co-evaporated with toluene (3×20 mL) to remove trace TFA. The compound was dried under vacuum overnight to afford 13.7 g (97%) of (S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoic acid as powder. LCMS-ESI (m/z) calculated for C₂₂H₂₂BrN₃O₃S: 487.1. found 488.1 [M+H]⁺, t_(R)=2.55 min. (Method 16). ¹H NMR (400 MHz, DMSO) δ 9.05 (d, J=5.0 Hz, 2H), 8.64 (d, J=8.4 Hz, 1H), 8.25 (d, J=8.1 Hz, 2H), 7.62 (d, J=3.8 Hz, 1H), 7.45 (d, J=8.2 Hz, 2H), 6.92 (d, J=3.8 Hz, 2H), 4.64 (td, J=10.5, 4.5 Hz, 1H), 3.26 (dd, J=13.8, 4.4 Hz, 1H), 3.11 (dd, J=13.7, 10.7 Hz, 1H), 1.32 (s, 9H).

methyl (S)-1-((S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)pyrrolidine-3-carboxylate (INT-35)

To a stirring solution of methyl (S)-pyrrolidine-3-carboxylate (357.0 mg, 2.16 mmol) in DMF (10 mL) were added DIEA (465.26 mg, 3.60 mmol) and (S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoic acid (700.0 mg, 1.44 mmol). The solution was cooled to 0° C. at ice bath and then HATU (677.55 mg, 2.88 mmol) in 2 mL DMF solution was slowly added. The reaction was stirred 1 hour at 0° C. and then warmed to RT with stilling for 2 hours. The reaction solution was extracted with DCM (3×20 mL) and aqueous NaHCO₃ (3×10 mL). The combined organics were dried over MgSO₄ and evaporated. The final compound was purified by column chromatography (40% DCM in hexane) to afford 501.0 mg (58%) of methyl (S)-1-((S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)pyrrolidine-3-carboxylate (INT-35) as a powder. LCMS-ESI (m/z calculated for C₂₈H₃₁BrN₄O₄S: 598.1. found 599.3 [M+H]⁺, t_(R)=3.553 min. (Method 16). ¹H NMR (400 MHz, DMSO) δ 9.05 (d, J=1.1 Hz, 2H), 8.77 (dd, J=11.5, 8.3 Hz, 1H), 8.25 (d, J=7.7 Hz, 2H). 7.72 (d, J=3.5 Hz, 1H), 7.46 (d, J=8.3 Hz, 2H), 6.92 (d. J=3.8 Hz, 1H), 4.98-4.73 (m, 1H), 3.88 (dd, J=10.3, 8.0 Hz, 1H), 3.71 (dd, J=15.5, 7.5 Hz, 1H), 3.50 (ddd, J=18.3, 12.2, 5.4 Hz, 2H), 3.38 (dd, J=17.3, 7.6 Hz, 1H), 3.23 (ddd, J=28.0, 15.0, 8.7 Hz, 1H), 3.18-2.85 (m, 3H), 2.17-1.96 (m, 2H), 1.87 (td, J=15.2, 7.4 Hz, 1H), 1.32 (s, 9H).

tert-butyl ((S)-3-(4-(5-bromopyrimidin-2-yl)phenyl-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)-D-alaninate

To a stirring solution of tert-butyl D-alaninate (5.60 g, 30.80 mmol) in DMF (50 mL) were added DIEA (8.29 g, 64.18 mmol) and (S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoic acid (12.5 g, 25.67 mmol). The solution was cooled to 0° C. at ice bath and then HATU (9.06 g, 38.50 mmol) in 15 mL DMF solution was slowly added. The reaction was stirred 1 hour at 0° C. and then warmed to RT with stirring for 2 hours. The reaction solution was extracted with DCM (3×50 mL) and aqueous NaHCO₃ (3×30 mL). The combined organics were dried over MgSO₄ and evaporated. The final compound was purified by column chromatography (40% DCM in hexane) to afford 14.7 g (94%) of tert-butyl ((S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)-D-alaninate as solid powder. LCMS-ESI (m/z) calculated for C₂₉H₃₅BrN₄O₄S: 614.2. found 615.3 [M+H]⁺, t_(R)=3.914 min. (Method 16). ¹H NMR (400 MHz, CDCl₃) δ 8.83 (d, J=3.6 Hz, 2H), 8.36 (d, J=8.2 Hz, 2H), 7.39 (d, J=8.2 Hz, 2H), 7.34 (d, J=3.8 Hz, 1H), 6.81 (d, J=3.8 Hz, 1H), 6.66 (d, J=7.6 Hz, 1H), 6.34 (d, J=7.2 Hz, 1H), 4.88 (d, J=5.9 Hz, 1H), 4.41 (t, J=7.2 Hz, 1H), 3.31 (dd, J=13.6, 5.8 Hz, 1H), 3.20 (dd, J=13.6, 7.8 Hz, 1H), 1.51-1.32 (m, 18H), 1.27 (d, J=7.1 Hz, 3H). ¹³C NMR (101 MHz, DMSO) δ 172.02, 171.31, 162.28, 162.13, 161.42, 158.55, 142.27, 136.34, 134.66, 130.20, 128.82, 127.92, 123.07, 118.63, 80.90, 54.45, 48.86, 39.59, 39.38, 32.39, 28.04, 17.68.

tert-butyl ((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-hydroxyphenyl)-pyrimidin-2-yl)phenyl)propanoyl)-D-alaninate (INT-36)

To a 100 ml flask were added (4-hydroxyphenyl)boronic acid (224.6 mg, 1.6 mmol), sodium carbonate decahydrate (96.0 mg, 1.6 mmol), tert-butyl ((S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)-D-alaninate (500.0 mg, 1.6 mmol), Pd(dppf)Cl₂ (58.5 mg, 0.08 mmol), THF (2.0 mL), CH₃CN (2.0 ml) and water (1.0 mL). The solution was degassed using N₂ bubbling for 10 min. The reaction mixture was heated to 80° C. for 2 hours. The reaction mixture was dried under reduced pressure to remove the solvent and diluted in DCM (20 mL). The mixture was extracted with DCM (3×20 mL) and aqueous NaHCO₃ (3×10 mL). The combined organics were dried over MgSO₄ and evaporated. The final compound was purified by column chromatography (40% DCM in hexane) to afford 462.3 mg (91%) of tert-butyl ((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-hydroxyphenyl)pyrimidin-2-yl)phenyl)propanoyl)-D-alaninate (INT-36) as a solid. LCMS-ESI (m/z) calculated for C₃₅H₄₀N₄O₅S: 628.3. found 629.3 [M+H]⁺, t_(R)=3.447 min. (Method 16). ¹H NMR (400 MHz, DMSO) δ 9.79 (s, 1H), 9.12 (s, 2H), 8.55 (t, J=16.2 Hz, 1H), 8.43 (d, J=7.2 Hz, 1H), 8.30 (d, J=8.1 Hz, 2H), 7.69 (t, J=7.5 Hz, 3H), 7.50 (dd, J=15.4, 8.3 Hz, 2H), 7.00-6.85 (m, 2H), 6.75 (t, J=9.9 Hz, 1H), 4.80 (td, J=9.7, 4.7 Hz, 1H), 4.15 (p, J=7.2 Hz, 1H), 3.10 (ddd, J=39.3, 19.4, 11.8 Hz, 2H), 1.40 (d. J=6.6 Hz, 9H), 1.31 (s, 9H), 1.23 (t, J=11.1 Hz. 3H).

methyl (S)-1-((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-hydroxyphenyl)pyrimidin-2-yl)phenyl)propanoyl)pyrrolidine-3-carboxylate (INT-37)

To a 10 ml flask were added (4-hydroxyphenyl)boronic acid (60.7 mg, 0.44 mmol), sodium carbonate decahydrate (26.4 mg, 0.44 mmol), methyl (S)-1-((S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl) pyrrolidine-3-carboxylate (INT-35) (130.0 mg, 0.44 mmol), Pd(dppf)Cl₂ (16.09 mg, 0.022 mmol), THF (2.0 mL), CH₃CN (2.0 ml) and water (1.0 mL). The solution was degassed using N₂ bubbling for 10 min. The reaction mixture was heated to 80° C., for 2 hours. The reaction mixture was dried under reduced pressure to remove the solvent and diluted in DCM (20 mL). The mixture was extracted with DCM (3×10 mL) and aqueous NaHCO₃ (3×10 mL). The combined organics were dried over MgSO₄ and evaporated. The final compound was purified by column chromatography (50% DCM in hexane) to afford 102.0 mg (76%) of methyl (S)-1-((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-hydroxyphenyl)pyrimidin-2-yl)phenyl)propanoyl)pyrrolidine-3-carboxylate (INT-37) as a solid powder. LCMS-ESI (m/z) calculated for C₃₄H₃₆N₄O₅S: 612.3. found 613.3 [M+H]⁺, t_(R)=3.138 min. (Method 16). ¹H NMR (400 MHz, DMSO) δ 9.81 (s, 1H), 9.13 (d, J=1.5 Hz, 2H), 8.77 (dd, J=11.4, 8.1 Hz, 1H), 8.31 (d, J=8.2 Hz, 2H), 7.73 (d, J=3.8 Hz, 1H), 7.69 (d, J=8.4 Hz, 2H), 7.46 (d, J=8.3 Hz, 2H), 6.99-6.84 (m, 3H), 4.88 (s, 1H), 3.72 (d, J=8.9 Hz, 1H), 3.62 (s, 1H), 3.59 (d, J=6.4 Hz, 1H), 3.50 (ddd, J=18.7, 12.0, 5.8 Hz, 1H), 3.36 (d, J=7.5 Hz, 1H), 3.27-3.16 (m, 1H), 3.18-2.97 (m, 3H), 2.15-1.95 (m, 2H), 1.88 (dd, J=12.5, 7.5 Hz, 1H), 1.32 (s, 9H).

tert-butyl (S)-1-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)azetidine-3-carboxylate (INT-38)

To a stirring solution of tert-butyl azetidine-3-carboxylate (64.55 mg, 0.41 mmol) in DMF (1 mL) were added DIEA (169.6 mg, 1.31 mmol), and (S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoic acid (100.0 mg, 0.21 mmol). The solution was cooled to 0° C., at ice bath and then HATU (74.11 mg, 1.31 mmol) in 1 ml, DMF solution was slowly added. The reaction was stirred 1 hour at 0° C. and then warmed to RT with stirring for 2 hours. The reaction solution was extracted with DCM (3×10 mL) and aqueous NaHCO₃ (3×10 mL). The combined organics were dried over MgSO₄ and evaporated to afford 117.6 mg (85%) of tert-butyl (S)-1-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)azetidine-3-carboxylate (INT-38) as a solid powder without further purification for next step. LCMS-ESI (m/z) calculated for C₃₀H₃₅BrN₄O₄S: 626.2. found 627.2 [M+H]⁺, t_(R)=3.884 min. (Method 16).

methyl (S)-1-((S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)pyrrolidine-3-carboxylate

Prepared using General Procedure 7. To a stirring solution of (S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl) propanoic acid (INT-22) (2082 mg, 2.75 mmol), methyl (S)-pyrrolidine-3-carboxlate HCl (545 mg, 3.30 mmol), and DIEA (1523 μl, 8.25 mmol) in DMF (6 mL) cooled to 0° C. was slowly added a solution of HATU (1254 mg, 3.30 mmol) in DMF (5 mL) in a drop-wise fashion. The reaction mixture was allowed to warm slowly and stirring continued for 4 h. The reaction mixture was poured onto ice-water and the solid was filtered. The solid was dissolved in EA (50 mL), dried over MgSO₄, evaporated and purified by chromatography (EA/hexane) to provide 932 mg (52%) of methyl (S)-1-((S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)pyrrolidine-3-carboxylate. LCMS-ESI (m/z) calculated for C₄₀H₄₆N₄O₆: 678.3. found 679.3 [M+H]⁺, t_(R)=4.50 min (Method 16).

methyl (S)-1-((S)-2-amino-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl) pyrrolidine-3-carboxylate (INT-39)

Prepared using General Procedure 18: To a stirred solution of methyl (S)-1-((S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)pyrrolidine-3-carboxylate (962 mg, 1.42 mmol) in MeOH (10 mL) was added palladium on carbon (10 wt %, 150 mg). The reaction mixture was flushed with hydrogen and stirred under hydrogen at room temperature for 1.5 h. The reaction mixture was filtered through Celite and concentrated to give 752 mg (97%) of methyl (S)-1-((S)-2-amino-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)pyrrolidine-3-carboxylate (INT-39). LCMS-ESI (m/z) calculated for C₃₂H₄H₄₀N₄O₄: 544.3. found 545.3 [M+H]⁺, t_(R)=3.61 min (Method 16).

(S)-2-(((benzyloxy)carbonyl)amino)-3-(4(5-bromopyrimidin-2-yl)phenyl)propanoic acid

Prepared using General Procedure 8: To a stirred solution of (S)-tert-butyl 2-(((benzyloxy)carbonyl)amino)-3-(4-(5-bromopyrimidin-2-yl)phenyl)propanoate (INT-7) (1.08 g, 2.11 mmol) in DCM (10 mL) was added TFA (5 mL). After 16 h, the mixture was diluted with toluene (10 mL) and evaporated. Further toluene (2×10 mL) was evaporated from the residue to afford 962 mg (100%) of (S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-bromopyrimidin-2-yl)phenyl)propanoic acid as an off-white solid. LCMS-ESI (m/z) calculated for C₂₁H₁₈BrN₃O₄: 455.1. found 456.0 [M+H]⁺, t_(R)=5.81 min (Method 10).

tert-butyl ((S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-bromopyrimidin-2-yl)phenyl)propanoyl)-D-alaninate (INT-42)

Prepared using General Procedure 7: To a stirred solution of (S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-bromopyrimidin-2-yl)phenyl)propanoic acid (962 mg, 2.11 mmol) and (R)-tert-butyl 2-aminopropanoate hydrochloride (383 mg, 2.11 mmol) in DMF (20 mL) was added DIEA (1.2 mL, 6.32 mmol). The mixture was cooled to 0° C. and HATU (802 mg, 2.11 mmol) was added portionwise. The cooling bath was removed and the mixture was allowed to warm to room temperature. After 1 h, the mixture was poured onto citric acid (100 mL of a 0.1 M aqueous solution) and iso-hexanes (20 mL) and the resulting precipitate collected by filtration, washing successively with water (2×10 mL), ACN (3 mL) and iso-hexanes (2×5 mL) to afford 1.1 g (89%) of tert-butyl ((S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-bromopyrimidin-2-yl)phenyl)propanoyl)-D-alaninate (INT-42) as a white solid. LCMS-ESI (m/z) calculated for C₂₈H₃₁BrN₄O₅: 582.2. found 605.2 [M+Na]⁺, t_(R)=7.94 min (Method 10).

2-amino-2-(2,5-dimethyloxazol-4-yl)acetic acid hydrochloride

To a stirred solution of 2,5-dimethyloxazole-4-carbaldehyde (272 mg, 2.17 mmol) and ammonium carbonate (564 mg, 5.87 mmol) in EtOH (6 mL) and water (2 mL) at 50° C. was added dropwise over 20 minutes a solution of potassium cyanide (177 mg, 2.72 mmol) in water (3.8 mL). The solution was stirred at 60° C. for 16 h. The EtOH was distilled off at 80° C. and HCl added (0.2 mL of a 37% aqueous solution). The mixture was allowed to cool to room temperature and the precipitate collected by filtration, washing successively with water (5 mL) and iso-hexanes (2×5 mL). This was dissolved in MeOH (14 mL) with stirring and treated with potassium hydroxide (5.2 mL of a 2.5 M aqueous solution, 13.1 mmol) and the solution stirred at 60° C. for 100 h. The mixture was allowed to cool and acidified with HCl. Solvents were evaporated and the residue treated with MeOH (10 mL). The mixture was filtered and the filtrate evaporated to afford 205 mg (55%) of 2-amino-2-(2,5-dimethyloxazol-4-yl)acetic acid hydrochloride as an orange oil. LCMS-ESI (m/z) calculated for C₇H₁₀N₂O₃: 170.1. found 171.1 [M+H]⁺, t_(R)=0.23 min (Method 11). ¹H NMR (400 MHz, DMSO) δ 8.71 (br s, 3H) 5.13 (s, 1H), 2.38 (s, 3H), 2.34 (s, 3H).

methyl 2-amino-2-(2,5-dimethyloxazol-4-yl)acetate hydrochloride (INT-43)

Prepared using General Procedure 22: To a stirred solution of 2-amino-2-(2,5-dimethyloxazol-4-yl)acetic acid hydrochloride (150 mg, 0.726 mmol) in MeOH (5 mL) was added HCl (1.2 mL of a 37% aqueous solution, 14.5 mmol) and the mixture heated under reflux for 4 h. The mixture was allowed to cool and solvents evaporated. The residue was treated with MeOH (12 mL) and filtered. The filtrate was evaporated to afford 135 mg (84%) of methyl 2-amino-2-(2,5-dimethyloxazol-4-yl)acetate hydrochloride (INT-43). LCMS-ESI (m/z) calculated for C₈H₁₂N₂O₃: 184.1. found 185.1 [M+H]⁺, t_(R)=0.23 min (Method 11). ¹H NMR (400 MHz, DMSO) δ 8.94 (br s, 3H), 5.35 (s, 1H), 3.73 (s, 3H), 2.38 (s, 3H), 2.36 (s, 3H).

4-benzyl-(tert-butyl) ((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)-L-aspartate (INT-47)

Prepared using General Procedure 7: To a stifled solution of (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl) propanoic acid (Compound 192) (600 mg, 1.00 mmol), L-aspartic acid β-benzyl ester α-tert-butyl ester hydrochloride (398.4 mg, 1.20 mmol) in DMF (6 mL) was added DIEA (554 μl, 3.00 mmol). The mixture was cooled to 0° C. and HATU (418 mg, 1.10 mmol) in DMF (4 mL) was added over 5 mins. The mixture was stirred at 0° C. for 0.5 h. The reaction mixture was added to water (250 mL) and the precipitate was filtered. The precipitate was dissolved in DCM (20 mL), dried over MgSO₄, and concentrated. The crude product was purified by chromatography 0-100% EA in hexane to afford 789 mg (92%) of 4-benzyl 1-(tert-butyl) ((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)-L-aspartate (INT-47) as a white solid. LCMS-ESI (m/z) calculated for C₅₀H₆₀N₄O₇S: 860.4. found 861.4 [M+H]⁺, t_(R)=6.028 min (Method 16).

(S)-4-(tert-butoxy)-3-((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanamido)-4-oxobutanoic acid (INT-44)

Prepared using General Procedures 18: To 4-benzyl 1-(tert-butyl) ((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl) propanoyl)-L-aspartate (INT-47) (345 mg, 0.4 mmol) in THF (5 mL) was added 10% Pd/C (60 mg). The reaction vessel was flushed with hydrogen gas and the reaction was stirred vigorously under hydrogen overnight at room temperature. The reaction mixture was filtered to remove the catalyst, the solvent was removed, and the crude product was purified by chromatography 0-100% EA in hexane to afford 228 mg (66%) of (S)-4-(tert-butoxy)-3-((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanamido)-4-oxobutanoic acid (INT-44) as a white solid. LCMS-ESI (m/z) calculated for C₄₃H₅₄N₄O₇S: 770.4. found 771.3 [M+H]⁺, t_(R)=4.21 min (Method 16).

tert-butyl ((S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-hydroxyphenyl)pyrimidin-2-yl)phenyl)propanoyl)-D-alaninate (INT-45)

To a 10 ml flask were added (4-hydroxyphenyl)boronic acid (317.23 mg, 2.30 mmol), sodium carbonate decahydrate (138.0 mg, 2.3 mmol), tert-butyl ((S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(4-(tert-butyl)benzamido)-propanoyl)-D-alaninate (INT-32) (700.0 mg, 1.15 mmol), Pd(dppf)Cl₂ (87.8 mg, 0.12 mmol), THF (10 mL), CH₃CN (10 ml) and water (5 mL). The solution was degassed using N₂ bubbling for 10 min. The reaction mixture was heated to 80° C. for 2 hours. The mixture was extracted with DCM (3×20 mL) and aqueous NaHCO₃ (3×10 mL). The combined organics were dried over MgSO₄ and evaporated. The final compound was purified by column chromatography (40% DCM in hexane) to afford 595.0 mg (83%) of tert-butyl ((S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-hydroxyphenyl)pyrimidin-2-yl)phenyl)propanoyl)-D-alaninate (INT-45) as solid. LCMS-ESI (m/z) calculated for C₃₇H₄₂N₄O₅: 622.3. found 623.3 [M+H]⁺, t_(R)=3.635 min. (Method 16). ¹H NMR (400 MHz, DMSO) δ 9.79 (s, 1H), 9.11 (s, 2H), 8.50 (d, J=8.7 Hz, 1H), 8.41 (d, J=7.2 Hz, 1H), 8.30 (d, J=8.2 Hz, 2H), 7.75 (d, J=8.4 Hz, 2H), 7.68 (d, J=8.6 Hz, 2H), 7.51 (d, J=8.2 Hz, 2H), 7.46 (d, J=8.4 Hz, 2H), 6.92 (d, J=8.6 Hz, 2H), 4.85 (td, J=9.9, 4.6 Hz, 1H), 4.17 (p, J=7.1 Hz, 1H), 3.24-3.00 (m, 2H), 1.46-1.34 (m, 9H), 1.32-1.19 (m, 12H).

tert-butyl N²-(((9H-fluoren-9-yl)methoxy)carbonyl)-N⁴-methyl-D-asparaginate

Prepared using General Procedures 7: To (R)-3-(4(9H-fluoren-9-yl)methoxy)carbonyl)amino)-4-(tert-butoxy)-4-oxobutanoic acid (205.7 mg, 0.5 mmol) in DMF (5 mL) at 0° C. was added HATU (380 mg, 1.0 mmol). After stirring for 3 min, DIEA (277 μL, 1.5 mmol) and methylamine (40 wt % in water, 116 μL, 1.5 mmol) were added. The reaction mixture was stirred at room temperature for 1 h. The reaction mixture was added to water (75 mL) and the precipitate was filtered and dried to give 201 mg (95%) of tert-butyl N²-4(9H-fluoren-9-yl)methoxy)carbonyl)-N⁴-methyl-D-asparaginate as a colorless semi-solid. LCMS-ESI (m/z) calculated for C₂₄H₂₈N₂O₅: 424.2. found 425.2 [M+H]⁺, t_(R)=3.22 min (Method 16).

tert-butyl N⁴-methyl-D-asparaginate (INT-46)

To tert-butyl N²-(((9H-fluoren-9-yl)methoxy)carbonyl)-N⁴-methyl-D-asparaginate (200 mg, 0.47 mmol) in DCM (0.93 mL) was added piperidine (233 μL, 2.35 mmol). The reaction mixture was stirred at room temperature for 1 h. All solvent was removed to give 215 mg of tert-butyl N⁴-methyl-D-asparaginate (INT-46) as a mixture with 1-((9H-fluoren-9-yl)methyl)piperidine. The mixture was used without purification in the next reaction. LCMS-ESI (m/z) calculated for C₉H₁₅N₂O₃: 202.1. found 203.1 [M+H]⁺, t_(R)=0.534 min (Method 16).

tert-butyl (S)-1-(2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-hydroxyphenyl)-pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate (INT-48)

Prepared using General Procedure 10. Into a solution of tert-butyl (S)-1-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)azetidine-3-carboxylate (INT-38) (60 mg, 0.1 mmol) in dioxane (2 mL) and H₂O (1 mL) were added sodium carbonate, decahydrate (60 mg, 0.2 mmol), 4-hydroxyphenylboronic acid (17 mg, 0.1 mmol) and PdCl₂(dppf) (7 mg, 0.01 mmol). The mixture was heated at 80° C. for 2.5 h then cooled to room temp, diluted with H₂O (100 mL) and extracted into EA (2×100 mL). The resulting organic layers were combined, dried (Na₂SO₄) and concentrated to yield 75 mg (117%) of crude tert-butyl (S)-1-(2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-hydroxyphenyl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate (INT-48) which was used without further purification. LCMS-ESI (m/z) calculated for C₃₆H₄₀N₄O₅S: 640.8. found 341.3[M+H]⁺, t_(R)=3.42 min. (Method 15).

Compound 492 was prepared from (S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl) propanoic acid (INT-22) and (S)-methyl 2-amino-6-((tert-butoxycarbonyl)amino)hexanoate hydrochloride using General Procedures 7, 18, 7, 4 and 8 sequentially.

Compounds 493, 494 and 500 were prepared from (S)-1-((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl) pyrimidin-2-yl) phenyl)propanoyl)pyrrolidine-2-carboxylic acid (Compound 328) using General Procedures 7 and 4 sequentially.

Compounds 495 and 496 were prepared from (S)-1-((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl) pyrimidin-2-yl) phenyl)propanoyl)pyrrolidine-2-carboxylic acid (Compound 328) using General Procedure 7.

Compound 497 was prepared from (S)-1-((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl) pyrimidin-2-yl)phenyl)propanoyl)-pyrrolidine-2-carboxylic acid (Compound 328) using General Procedures 7 and 8 sequentially.

Compounds 498 and 499 were prepared from (S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoic acid (INT-22) using General Procedures 7, 18, 7 and 8 sequentially.

Compounds 501, 592-602, 604, 607-621, 625-629, 631, 633, 634, 636-641, 644, 655, 668 and 669 were prepared from (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl) propanoic acid (Compound 192) using General Procedures 7 then 4.

Compound 502 was prepared from 4-benzyl 1-(tert-butyl) ((S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)-L-aspartate (INT-30) using General Procedure 8.

Compounds 503-507, 579, and 580 were prepared from (S)-4-(benzyloxy)-2-((S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanamido)-4-oxobutanoic acid (Compound 502) using General Procedures 7 then 18.

Compounds 508-511 were prepared from (S)-4-(tert-butoxy)-3-((S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanamido)-4-oxobutanoic acid (INT-31) using General Procedures 7 then 8.

Compounds 512-523 were prepared from (S)-4-(tert-butoxy)-3-((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanamido)-4-oxobutanoic acid (INT-44) using General Procedures 7 then 8.

Compound 524 was prepared from 4-benzyl 1-(tert-butyl) ((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)-L-aspartate (INT-47) using General Procedure 8.

Compounds 525-533 were prepared from (S)-4-(benzyloxy)-2-((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanamido)-4-oxobutanoic acid (Compound 524) using General Procedures 7 then 18.

Compound 534 was prepared from (S)-4-(benzyloxy)-2-((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanamido)-4-oxobutanoic acid (Compound 524) using General Procedures 7, 18, then 8.

Compound 535 was prepared from (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl) propanoic acid (Compound 192) using General Procedures 3 then 8.

Compound 536 was prepared from (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 85) and 2-amino-2-(2,5-dimethyloxazol-4-yl)acetic acid hydrochloride (INT-43) using General Procedures 7 and 4 sequentially.

Compounds 537 and 554 were prepared from (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 85) using General Procedures 7 then 8.

Compounds 538-553, 555-578, 583-588, 622-624, 632 and 660-662 were prepared from (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 85) using General Procedures 7 then 4.

Compound 581 was prepared from (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 85) using General Procedures 7, 4 then 18.

Compound 582 was prepared from (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 85) using General Procedures 7, 8 then 4.

tert-butyl (R)-3-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-4-(methylamino)-4-oxobutanoate

Prepared using General Procedure 7. To a stirring solution of (R)-2-(4(9H-fluoren-9-yl)methoxy)carbonyl)amino)-4-(tert-butoxy)-4-oxobutanoic acid (308 mg, 0.75 mmol), methylamine (40 wt % in water, 174 μL, 2.25 mmol), and DIEA (415 μl, 2.25 mmol) in DMF (7.5 mL) cooled to 0° C. was added HATU (569 mg, 1.5 mmol). The reaction mixture was allowed to warm slowly and stirring continued for 18 h. The reaction mixture was poured onto ice-water and the solid was filtered. The solid was dissolved in DCM (10 mL), dried over MgSO₄ and evaporated. The crude product was purified by column chromatography to afford 226 mg (71%) of tert-butyl (R)-3-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-4-(methylamino)-4-oxobutanoate. LCMS-ESI (m/z) calculated for C₂₄H₂₈H₂O₅: 424.2. found 447.1 [M+Na]⁺, t_(R)=3.12 min. (Method 16).

tert-butyl (R)-3-amino-4-(methylamino)-4-oxobutanoate

To a stirring solution of tert-butyl (R)-3-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-4-(methylamino)-4-oxobutanoate (226 mg, 0.53 mmol), in DCM (1.05 mL) was added piperidine (263 μL, 2.7 mmol). The reaction mixture was stirred for 1 h at room temperature. The solvent was evaporated to afford 250 mg (100%) of tert-butyl (R)-3-amino-4-(methylamino)-4-oxobutanoate as a mixture with 1-((9H-fluoren-9-yl)methyl)piperidine. The mixture was used without purification in the next reaction. LCMS-ESI (m/z) calculated for C₉H₁₈N₂O₃: 202.1. found 225.1 [M+Na]⁺, t_(R)=0.50 min. (Method 15).

Compound 589 was prepared from (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 85) and tert-butyl (R)-3-amino-4-(methylamino)-4-oxobutanoate using General Procedures 7 then 8.

tert-butyl (S)-1-(2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-(heptyloxy)phenyl) pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate

Prepared using General Procedure 7: A stirred solution of (S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl) propanoic acid (INT-22) (1 g, 1.76 mmol), tert-butyl azetidine-3-carboxylate (0.554 g, 1.76 mmol) and DIEA (1.30 mL, 7.05 mmol) in DMF (20 mL) at 0° C. was treated with HATU (0.703 g, 1.85 mmol), added portionwise. After 10 min, the cooling bath was removed. After a further l h the mixture was poured onto 0.2 M HCl (100 mL) and extracted with EA (3×30 mL). The combined organic extracts were washed with brine (20 mL), dried over MgSO₄ and evaporated. Column chromatography (EA/DCM/iso-hexanes) gave 708 mg (58%) of tert-butyl (S)-1-(2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate as an off-white solid. LCMS-ESI (m/z) calculated for C₄₂H₅₀N₄O₆: 706.4. found 707.1 [M+H]⁺, t_(R)=3.60 min (Method 6).

tert-butyl (S)-1-(2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)-pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate

Prepared using General Procedures 18 and 7: To a stirred solution of (S)-tert-butyl 1-(2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate (708 mg, 1.00 mmol) and triethylsilane (352 μL, 2.20 mmol) in DCM (10 mL) was added a solution of diacetoxypalladium (22.5 mg, 0.100 mmol) and triethylamine (43 μL, 0.30 mmol) in DCM (2 mL). After 16 h, the mixture was filtered through Celite and solvents evaporated. The residue was taken up in DMF (6 mL) and the resulting solution added to a stirred solution of active ester prepared by the action of HATU (399 mg, 1.05 mmol) and DIEA (0.55 mL, 3.00 mmol) on 4-(tert-butyl)benzoic acid (196 mg, 1.10 mmol) in DMF (5 mL) over 10 min. After 1 h, the mixture was poured onto 0.5 M HCl (100 mL) and extracted with EA (3×50 mL). The combined organic extracts were washed with brine (20 mL), dried over MgSO₄ and evaporated. Column chromatography (EA/DCM/iso-hexanes) gave 583 mg (80%) of tert-butyl (S)-1-(2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate. LCMS-ESI (m/z) calculated for C₄₅H₅₆N₄O₅: 732.4; no m/z observed, t_(R)=3.99 min (Method 11).

(S)-1-(2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylic acid (Compound 590)

Prepared using General Procedure 8: To a stirred solution of (S)-tert-butyl 1-(2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate (580 mg, 0.791 mmol) in DCM (6 mL) was added TFA (2 mL) After 3 h, the mixture was diluted with toluene (20 mL) and the solvents evaporated. Column chromatography (acetic acid/EA/DCM/iso-hexanes) gave moderately pure product. This was further purified by re-slurry from DCM/ACN then iso-propyl acetate. The resulting solid was again purified by column chromatography (acetic acid/EA/DCM/iso-hexanes) then reslurried from diethyl ether to afford 212 mg (40%) of (S)-1-(2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)-propanoyl)azetidine-3-carboxylic acid (Compound 590). LCMS-ESI (m/z) calculated for C₄₁H₄₈N₄O₅; 676.4; no m/z observed, t_(R)=10.23 min (Method 10). The chiral purity was >95% e.e (chiral Method). ¹H NMR (400 MHz, DMSO-d6) δ 12.80 (s, 1H), 9.16 (d, J=1.5 Hz, 2H), 8.75 (dd, J=8.1, 3.7 Hz, 1H), 8.36-8.31 (m, 2H), 7.85-7.75 (m, 4H), 7.49-7.46 (m, 4H), 7.11-7.05 (m, 2H), 4.74-4.68 (m, 1H), 4.45 (t, J=8 Hz, 0.5H), 4.33-4.30 (m, 0.5H), 4.24-4.16 (m, 1H), 4.06-4.00 (m, 3H), 3.47-3.40 (m, 1H), 3.90 (ddd, J=13.5, 9.7, 6.0 Hz, 1H), 3.18-3.05 (m, 2H), 1.77-1.70 (m, 2H), 1.46-1.24 (m, 17H), 0.89-0.86 (m, 3H).

Compound 591 was prepared from (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 85) and tert-butyl N⁴-methyl-D-asparaginate (INT-46) using General Procedures 7 then 8.

Compounds 603, 605, 645-648, 652, 653, 656-659 and 664 were prepared from (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl) phenyl) propanoic acid (Compound 192) using General Procedures 7 then 8.

Compound 606 was prepared from (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl) propanoic acid (Compound 192) using General Procedures 7, 4 then 8.

Compound 630 was was prepared from (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl) propanoic acid (Compound 192) and tert-butyl (R)-3-amino-4-(methylamino)-4-oxobutanoate using General Procedures 7 then 8.

(S)-methyl 1-(2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-(heptyloxy)phenyl)-pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate

Prepared using General Procedure 7: To a stirred solution of (S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)-propanoic acid (INT-22) (2.2 g, 3.88 mmol) and methyl azetidine-3-carboxylate, HCl (0.705 g, 4.65 mmol) in DMF (25 mL) was added DIEA (2.7 mL, 15.5 mmol) and the mixture cooled to 0° C. HATU (1.621 g, 4.26 mmol) was added portion-wise over 10 minutes. After 3 h, further methyl azetidine-3-carboxylate, HCl (0.223 g, 1.938 mmol) and HATU (0.456 g, 1.938 mmol) were added. The mixture was allowed to stir at room temperature for 100 h. The mixture was treated with citric acid (50 ml, of a 0.1 M aqueous solution) and water (20 mL) and extracted with EA (2×100 mL). The combined organic extracts were washed with brine (80 mL), dried over MgSO₄ and solvents evaporated. Column chromatography (EA/iso-hexanes) gave 1.45 g (56%) of (S)-methyl 1-(2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate as a colourless glass. LCMS-ESI (m/z) calculated for C₃₉H₄₄N₄O₆: 664.3. found 665.3 [M+H]⁺, t_(R)=3.37 min (Method 6).

(S)-methyl 1-(2-amino-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)-azetidine-3-carboxylate

Prepared using General Procedure 18: A solution of (S)-methyl 1-(2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)-propanoyl)azetidine-3-carboxylate (1.2 g, 1.81 mmol) in MeOH (150 mL) was passed over a 10% Pd/C CatCart (55×4 mm) at 65° C. in a Thales Nanotechnology H-Cube reactor at 2.1 mL/min. The solvent was evaporated and the residue purified by column chromatography (Ammonia/MeOH/DCM) to afford 604 mg (63%) of (S)-methyl 1-(2-amino-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate. LCMS-ESI (m/z) calculated for C₃₁H₃₈N₄O₄: 530.3. found 531.0 [M+H]⁺, t_(R)=1.60 min (Method 6).

methyl (S)-1-(2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)-pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate

To a stirred solution of (9-methyl 1-(2-amino-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate (360 mg, 0.678 mmol) and 5-(tert-butyl)thiophene-2-carboxylic acid (125 mg, 0.678 mmol) in DMF (6 mL, 77 mmol) was added DIEA (0.47 mL, 2.71 mmol) and the mixture cooled to 0° C. HATU (284 mg, 0.746 mmol) was added portion-wise and the reaction stirred at room temperature for 1 h. The mixture was poured onto citric acid (70 mL of a 10% w/w aqueous solution) and extracted with EA (2×100 mL). The combined organic extracts were washed with brine (50 mL), dried over MgSO₄ and solvents evaporated. Column chromatography (EA/iso-hexanes) gave 389 mg (82%) of (S)-methyl 1-(2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate as a pale yellow solid. LCMS-ESI (m/z) calculated for C₄₀H₄₈H₄O₅S: 696.3. found 697.0 [M+H]⁺, t_(R)=3.60 min (Method 6).

(S)-1-(2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylic acid (Compound 635)

To a stirred solution of (9-methyl 1-(2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate (341 mg, 0.489 mmol) in THF (10 mL) was added sulfuric acid (3 mL of a 5 M aqueous solution, 15 mmol). After 24 h, the mixture was diluted with water (100 mL) and extracted with EA (2×100 mL). The combined organic extracts were washed with brine (50 mL), dried over MgSO₄ and solvents evaporated. Column chromatography (AcOH/EA/DCM/iso-hexanes) gave 233 mg (70%) of (S)-1-(2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylic acid (Compound 635) as a white solid. LCMS-ESI (m/z) calculated for C₃₉H₄₆N₄O₅S: 682.3; no m/z observed, t_(R)=10.17 min (Method ID). The chiral purity was >98% e.e. (Chiral Method). ¹H NMR (400 MHz, DMSO-d6) δ 12.75 (s, 1H), 9.17 (d, J=1.8 Hz, 2H), 8.77 (app dd, J=8.3, 2.7 Hz, 1H), 8.32 (dd, J=8.2, 4.7 Hz, 2H), 7.79 (d, J=8.7 Hz, 2H), 7.70 (d, J=3.9 Hz, 1H), 7.47-7.52 (m, 2H), 7.11-7.07 (m, 2H), 6.93 (app dd, J=3.9, 1.4 Hz, 1H), 4.70-4.63 (m, 1H), 4.43 (t, J=9.0 Hz, 0.5H), 4.30 (dd, J=8.7, 6.0 Hz, 0.5H), 4.21 (t, J=8.9 Hz, 0.5H), 4.15 (dd, J=8.5, 6.3 Hz, 0.5H), 4.08-3.99 (m, 3H), 3.47-3.40 (m, 1H), 3.93-3.87 (m, 1H), 3.15-3.01 (m, 2H), 1.77-1.70 (m, 2H), 1.49-1.16 (m, 17H), 0.88 (t, J=6.8 Hz, 3H).

Compound 642 was prepared from (2S,3R)-2-amino-3-hydroxy-3-phenylpropanoic acid and (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)-pyrimidin-2-yl)phenyl)propanoic acid (Compound 192) using General Procedures 26, 7 and 8 sequentially.

Compounds 650 and 654 were prepared from (S)-1-(2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylic acid (Compound 635) using General Procedure 7.

Compound 649 was prepared from methyl (S)-2-(N-(1-(2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carbonyl)sulfamoyl)acetate (Compound 654) using General Procedure 4.

threo-methyl 2-amino-3-hydroxy-3-phenylpropanoate HCl

Prepared using General Procedure 22: To a stirred solution of threo-2-amino-3-hydroxy-3-phenylpropanoic acid (7 g, 38.6 mmol) in MeOH (20 mL) was added chlorotrimethylsilane (19.8 mL, 155 mmol). The mixture was heated under reflux for 16 h then solvents evaporated to afford 8.95 g (100%) of threo-methyl 2-amino-3-hydroxy-3-phenylpropanoate HCl. LCMS-ESI (m/z) calculated for C₁₀H₁₃NO₃; 195.1. found 196.0 [M+H]⁺, t_(R)=018 min (Method 10). ¹H NMR (400 MHz, DMSO-d6) δ 8.45 (s, 3H), 7.42-7.31 (m, 5H), 5.03 (d, J=5.4 Hz, 1H), 4.18 (app t, J=5.4 Hz, 1H), 3.63 (s, 3H).

threo-methyl 2-((tert-butoxycarbonyl)amino)-3-hydroxy-3-phenylpropanoate

Prepared using General Procedure 23: To a stirred mixture of threo-methyl 2-amino-3-hydroxy-3-phenylpropanoate, HCl (1.1 g, 4.75 mmol), MeOH (10 mL) and NaHCO₃ (8.44 mL of a 0.9 M aqueous solution, 7.60 mmol) was added di-tert-butyl dicarbonate (1.451 g, 6.65 mmol). After 3 h, the bulk of the MeOH was evaporated under reduced pressure and the aqueous extracted with diethyl ether (2×40 mL). The combined organic extracts were dried over MgSO₄ and solvents evaporated. The residue was re-slurried from iso-hexanes and the solid collected by filtration to afford 1.1 g (78%) of threo-methyl 2-((tert-butoxycarbonyl)amino)-3-hydroxy-3-phenylpropanoate. LCMS-ESI (m/z) calculated for C₁₅H₂₁NO₅: 295.1. found 318.0 [M+Na]⁺, t_(R)=4.45 min (Method 10).

Methyl 2-((tert-butoxycarbonyl)amino)-3-oxo-3-phenylpropanoate

Prepared using General Procedure 24: To a stirred solution of oxalyl chloride (0.47 ml, 5.42 mmol) in DCM (50 mL) at −78° C. was added DMSO (0.77 mL, 10.8 mmol) and the reaction stirred for 10 mins. This was then treated with a pre-cooled solution of threo-methyl 2-((tert-butoxycarbonyl)amino)-3-hydroxy-3-phenylpropanoate (1 g, 3.39 mmol) in DCM (20 mL). After 2 h, DIEA (2.96 mL, 16.93 mmol) was added and the mixture allowed to warm to 0° C. After 1 h, the mixture was washed with NH₄Cl (2×20 mL of a saturated aqueous solution) and the organics dried over MgSO₄ and solvents evaporated to afford 964 mg (97%) of methyl 2-((tert-butoxycarbonyl)amino)-3-oxo-3-phenylpropanoate. LCMS-ESI (m/z) calculated for C₁₅H₁₉NO₅: 293.1. found 316.0 [M+Na]⁺, t_(R)=2.15 min (Method 11).

erythro-methyl 2-((tert-butoxycarbonyl)amino)-3-hydroxy-3-phenylpropanoate

Prepared using General Procedure 25: To a stirred solution of methyl 2-((tert-butoxycarbonyl)amino)-3-oxo-3-phenylpropanoate (0.5 g, 1.705 mmol) in MeOH (10 mL) at −78° C. was added sodium borohydride (0.045 g, 1.193 mmol). After 0.5 h, the reaction was quenched with NH₄Cl (8 mL of a saturated aqueous solution) and the MeOH evaporated under reduce pressure. The mixture was extracted with DCM (2×30 mL) and the combined organic extracts dried over MgSO₄ and solvents evaporated. The residue was purified by column chromatography (EA/iso-hexanes) to afford 312 mg (62%) of erythro-methyl 2-((tert-butoxycarbonyl)amino)-3-hydroxy-3-phenylpropanoate. LCMS-ESI (m/z) calculated for C₁₅H₂₁NO: 295.1. found 318.0 [M+Na]⁺, t_(R)=1.84 min (Method 11).

erythro-methyl 2-amino-3-hydroxy-3-phenylpropanoate

Prepared using General Procedure 8: To a stirred solution of erythro-methyl 2-((tert-butoxycarbonyl)amino)-3-hydroxy-3-phenylpropanoate (0.3 g, 1.02 mmol) in DCM (15 mL) was added TFA (1.57 mL, 20.32 mmol). After 3 h, solvents were evaporated and the residue purified by strong-cation-exchange ion exchange chromatography to afford 195 mg (98%) of erythro-methyl 2-amino-3-hydroxy-3-phenylpropanoate as a white solid. LCMS-ESI (m/z) calculated for C₁₀H₁₃NO₃: 195.2. found 196.0 [M+Na]⁺, t_(R)=0.19 min (Method 11).

Compound 651 was prepared from erythro-2-amino-3-hydroxy-3-phenylpropanoic acid and (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)-pyrimidin-2-yl)phenyl)propanoic acid (Compound 192) using General Procedures 7 and 4 sequentially.

Compound 663 was prepared from (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy) phenyl)pyrimidin-2-yl)phenyl) propanoic acid (Compound 192) and tert-butyl N⁴-methyl-D-asparaginate (INT-46) using General Procedures 7 then 8.

Compound 665 was prepared from erythro-2-amino-3-hydroxy-3-phenylpropanoic acid and (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)-pyrimidin-2-yl)phenyl)propanoic acid (Compound 192) using General Procedures 7 and 4 sequentially, followed by chiral preparative HPLC.

methyl (2,3-erythro)-2-((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanamido)-3-hydroxy-3-phenylpropanoate

Prepared using General Procedure 7: To a stirred solution of (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)-propanoic acid (Compound 192) (578 mg, 0.963 mmol) and erythro-methyl 2-amino-3-hydroxy-3-phenylpropanoate (188 mg, 0.963 mmol) in DMF (8 mL) was added DIEA (503 μL, 2.89 mmol). The mixture was cooled to 0° C. and treated with HATU (384 mg, 1.01 mmol), added portionwise. The cooling bath was removed and the reaction allowed to stir for 2 h. The mixture was treated with citric acid (100 mL, of a 10% wily aqueous solution) and extracted with EA (3×20 mL). The combined organic extracts were dried over MgSO₄ and solvents evaporated. Column chromatography (EA/iso-hexanes) gave 654 mg (87%) of methyl(2,3-erythro)-2-((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanamido)-3-hydroxy-3-phenylpropanoate as a white solid. LCMS-ESI (m/z) calculated for C₄₅H₅₂N₄O₆S: 776.4; no m/z observed, t_(R)=3.24 min (Method 11).

(2R,3R)-2-((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)-pyrimidin-2-yl)phenyl)propanamido)-3-hydroxy-3-phenylpropanoic acid (Compound 666)

Prepared using General Procedure 4: To a stirred solution of methyl(2,3-erythro)-2-((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)-phenyl) pyrimidin-2-yl)phenyl)propanamido)-3-hydroxy-3-phenylpropanoate (327 mg, 0.421 mmol) in THF (5 mL) was added LiOH (231 μL of a 2 M aqueous solution, 0.463 mmol). After 30 minutes the mixture was poured into citric acid (25 mL of a 10% w/v aqueous solution) and extracted with DCM (3×30 mL). The combined organic extracts were dried over MgSO₄ and solvents evaporated. The residue was purified by column chromatography (AcOH/MeOH/DCM) then preparative chiral HPLC to afford 15 mg (5%) of (2R,3R)-2-((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)-phenyl)pyrimidin-2-yl)phenyl) propanamido)-3-hydroxy-3-phenylpropanoic acid (Compound 666). LCMS-ESI (m/z) calculated for C₄₄H₅₀N₄O₆S: 762.4; no m/z observed, t_(R)=10.68 min (Method 10). The chiral purity was >70% d.e. (Chiral Method 2). ¹H NMR (400 MHz, DMSO-d6) δ 12.71 (s, 1H), 9.15 (s, 2H), 8.51 (d, J=9.3 Hz, 1H), 8.42 (d, J=9.0 Hz, 1H), 8.27-8.23 (m, 2H), 7.80-7.77 (m, 2H), 7.61 (d, J=3.9 Hz, 1H), 7.42-7.37 (m, 4H), 7.27-7.20 (m, 3H), 7.10-7.08 (m, 2H), 6.89 (d, J=3.9 Hz, 1H), 5.81 (s, 1H), 4.80 (d, J=8.8 Hz, 1H), 4.68-4.62 (m, 1H), 4.55 (t, J=9.0 Hz, 1H), 4.04 (t, J=6.5 Hz, 2H), 2.59-2.52 (m, 2H), 1.80-1.68 (m, 2H), 1.43-1.29 (m, 17H), 0.94-0.83 (m, 3H).

(2R,3S)-2-((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy) phenyl)pyrimidin-2-yl)phenyl)propanamido)-3-hydroxy-3-phenylpropanoic acid (Compound 667)

Prepared using General Procedures 7 and 4: To a stirred solution of threo-methyl 2-amino-3-hydroxy-3-phenylpropanoate (50 mg, 0.256 mmol) and (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 192) (140 mg, 0.233 mmol) in DMF (3 mL) was added DIEA (122 μL, 0.699 mmol) and the mixture cooled to 0° C. HATU (97 mg, 0.256 mmol) was added portionwise and the mixture allowed to warm to room temperature over 2 h. The mixture was treated with citric acid (40 mL of a 5% w/v aqueous solution) and the liquid decanted. The aqueous was extracted with EA (50 mL) and this used to dissolve the solid residue. This solution was diluted with toluene (5 mL) and solvents evaporated. The residue was purified by column chromatography (ACN/DCM). The intermediate ester thus obtained was dissolved in THF/MeOH (1:1, 3 mL) and allowed to stir with LiOH (0.23 mL of a 2 M aqueous solution, 0.46 mmol). After 16 h, further LiOH (0.58 mL of a 2 M aqueous solution, 1.17 mmol) was charged. After an additional 1 h, the mixture was treated with citric acid (20 mL of a 10% w/v aqueous solution) and the precipitate collected by filtration. Purification by preparative chiral HPLC gave 5 mg (3%) of (2R,3S)-2((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)-phenyl)propanamido)-3-hydroxy-3-phenylpropanoic acid (Compound 667). LCMS-ESI (m/z) calculated for C₄₄H₅₀N₄O₆S: 762.4; no m/z observed, t_(R)=10.63 min (Method 10). The chiral purity was <80% d.e. (chiral Method 2). ¹H NMR (400 MHz, DMSO-d6) δ 12.71 (s, 1H), 9.08 (s, 2H), 8.30 (dd, J=17.6, 9.1 Hz, 2H), 8.24-8.13 (m, 2H), 7.78-7.66 (m, 2H), 7.53 (d, J=3.9 Hz, 1H), 7.32 (app ddd, J=16.7, 7.6, 1.8 Hz, 4H), 7.25-7.08 (m, 3H), 7.08-6.90 (m, 2H), 6.83 (d, f=3.8 Hz, 1H), 5.81 (d, J=4.6 Hz, 1H), 5.17 (s, 1H), 4.72 (ddd, J=11.0, 9.0, 3.9 Hz, 1H), 4.50 (dd, J=9.2, 2.8 Hz, 1H), 3.96 (t, J=6.5 Hz, 2H), 2.78 (dd, J=13.8, 3.7 Hz, 1H), 2.68-2.54 (m, 1H), 1.75-1.59 (m, 2H), 1.42-1.12 (m, 17H), 0.89-0.75 (m, 3H).

Compound 670 was prepared from methyl 2-(4-(tert-butyl)benzamido)-2-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)acetate (INT-34) and 5-(4-(heptyloxy)phenyl)-2-iodopyrimidine using General Procedure 10.

Compound 671 was prepared from 2-chloroquinolin-6-ol and 1-bromoheptane using General Procedure 12, General Procedure 10 using tert-butyl (S)-2-(4-(tert-butyl)benzamido)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propanoate (INT-13), then General Procedure 8.

Compound 672 was prepared from 3-chloroisoquinolin-7-ol and 1-bromoheptane using General Procedure 12, General Procedure 10 using tert-butyl (S)-2-(4-(tert-butyl)benzamido)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propanoate (INT-13), and General Procedure 8.

Compound 673 was prepared from 2-chloroquinazolin-6-ol and 1-bromoheptane using General Procedure 12, General Procedure 10 using tert-butyl (S)-2-(4-(tert-butyl)benzamido)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propanoate (INT-13), then General Procedure 8.

Compound 674 and 693 were prepared from tert-butyl (S)-3-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(4-(tert-butyl)benzamido)propanamido)propanoate (INT-28) using General Procedure 11 then 8.

Compounds 675-691, 694, 695 and 696 were prepared from tert-butyl (S)-3-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(4-(tert-butyl)benzamido)propanamido)propanoate (INT-28) using General Procedures 10 and 8.

Compounds 692, 744-748, 751-755, 758-760 were prepared from commercial nitriles using General Procedure 2, then General Procedure 5 using (S)-2-(4-(3-((3-(tert-butoxy)-3-oxopropyl)amino)-2-(4-(tert-butyl)benzamido)-3-oxopropyl)phenyl)pyrimidine-5-carboxylic acid (INT-33) and General Procedure 8.

Compounds 697-705 were prepared by coupling commercial phenol boronic acids and tert-butyl (S)-3-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(4-(tert-butyl)benzamido)propanamido)propanoate (INT-28) using General Procedure 10 followed by General Procedures 12 and 8.

Compounds 706-716, and 803 were prepared from tert-butyl (S)-3-(2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-hydroxyphenyl)-pyrimidin-2-yl)phenyl)propanamido)propanoate (INT-29) using General Procedures 12 and 8.

Compounds 717-742 and 800 were prepared from tert-butyl ((S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(4-(tert-butyl)benzamido)-propanoyl)-D-alaninate (INT-32) using General Procedures 10 then 8.

Compounds 743, 749, 750, 756 and 757 were prepared from (S)-2-(4-(3-((3-(tert-butoxy)-3-oxopropyl)amino)-2-(4-(tert-butyl)benzamido)-3-oxopropyl)phenyl)pyrimidine-5-carboxylic acid (INT-33) using General Procedure 5 and 8.

Compounds 761-769 were prepared from methyl (S)-1-((S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)pyrrolidine-3-carboxylate (INT-35) using General Procedures 10 then 4.

Compounds 770 and 771 were prepared from tert-butyl ((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-hydroxyphenyl)pyrimidin-2-yl)phenyl)propanoyl)-D-alaninate (INT-36) using General Procedures 12 then 8.

Compounds 772-774 were prepared from methyl (S)-1-((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-hydroxyphenyl)pyrimidin-2-yl)phenyl)propanoyl)pyrrolidine-3-carboxylate (INT-37) using General Procedures 12 then 4.

Compound 775 was prepared from tert-butyl (S)-1-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)azetidine-3-carboxylate (INT-38) using General Procedures 10 then 8.

Compound 776 was prepared from (3-methyl-4-hydroxyphenyl)boronic acid and tert-butyl (S)-1-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)azetidine-3-carboxylate (INT-38) using General Procedure 10, then with 1-bromoheptane using General Procedure 12 then 8.

Compounds 777-789 were prepared from tert-butyl (S)-1-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)azetidine-3-carboxylate (INT-38) using General Procedures 10 then 8.

Compound 790 was prepared from (4-hydroxy-2-methylphenyl)boronic acid and (R)-tert-butyl 2-((S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-bromopyrimidin-2-yl)phenyl)propanamido)propanoate (INT-42) using General Procedures 10, 12, 18, 7 and 8 sequentially.

Compound 791 was prepared from 4-bromo-3,5-dimethylphenol and (R)-tert-butyl 2-((S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-bromopyrimidin-2-yl)phenyl)propanamido)propanoate (INT-42) using General Procedures 12, 27, 10, 18, 7 and 8 sequentially.

Compounds 792-794 were prepared from tert-butyl ((S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-hydroxyphenyl)pyrimidin-2-yl)phenyl)propanoyl)-D-alaninate (INT-45) using General Procedures 12 then 8.

Compounds 795-797 and 799 were prepared from tert-butyl (S)-1-(2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-hydroxyphenyl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate (INT-48) using General Procedures 12 then 8.

tert-butyl(S)-1-(2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-((4-methylpentyl)oxy)phenyl-)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate

Prepared using General Procedure 12: To a stirred solution of tert-butyl (S)-1-(2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-hydroxyphenyl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate (INT-48) (300 mg, 0.479 mmol) in DMF (5 mL) was added Cs₂CO₃ (197 mg, 0.58 mmol) and 1-bromo-4-methylpentane (158 mg, 0.96 mmol). The reaction mixture was stirred for 18 h at 65° C. then diluted with aq. NaHCO₃ (100 ml, saturated) and extracted with EA (2×100 mL). The combined organic layers were dried (Na₂SO₄), concentrated, and purified by column chromatography (EA/hexane) to afford 188 mg (54%) of tert-butyl (S)-1-(2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-((4-methylpentyl)oxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate. LCMS-ESI (m/z) calculated for C₄₂H₅₂N₄O₅S: 724.96. found 725.3 [M+H]⁺, t_(R)=12.71 min (Method 16). ¹H NMR (400 MHz, CDCl₃) δ 8.97 (d, J=7.5 Hz, 2H), 8.45 (d, J=5.5 Hz, 2H), 7.55 (s, 2H), 7.49-7.31 (m, 3H), 7.05 (d, J=6.6 Hz, 2H), 6.82 (s, 1H), 6.68 (d, J=28.8 Hz, 1H), 4.82 (s, 1H), 4.30 (s, 0.5H), 4.07 (m, 5.5H), 3.56 (s, 0.5H), 3.31-3.09 (m, 2H), 2.91 (s, 0.5H), 1.83 (s, 2H), 1.60 (d, J=25.3 Hz, 1H), 1.40 (s, 16H), 1.29 (s, 4H), 0.95 (s, 6H).

(S)-1-(2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-((4-methylpentyl)oxy)phenyl)-pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylic acid (Compound 798)

Prepared using General Procedure 8: To a stirred solution of tert-butyl (S)-1-(2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-((4-methylpentyl)oxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate (188 mg, 0.26 mmol), in DCM (2 mL) was added TFA (2 mL). The mixture was stirred for 4 h then concentrated. The resulting solid was dissolved in DCM (10 mL) and concentrated (5×) to remove excess TFA, affording 169 mg (98%) of 1-(2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-((4-methylpentyl)oxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylic acid (Compound 798) as a yellow solid. LCMS-ESI (m/z) calculated for C₃₈H₄₄N₄O₅S: 668.85. found 669.3 [M+H]⁺, t_(R)=9.121 min (Method 16). ¹H NMR (400 MHz, CDCl₃) δ 9.17 (s, 2H), 8.12 (d, J=7.8 Hz, 2H), 7.58 (m, 3H), 7.45 (m, 1H), 7.42 (m, 2H), 7.06 (m, 2H), 6.84 (m, 1H), 4.71 (d, J=7.7 Hz, 1H), 4.33-4.14 (m, 2H), 4.08 (dd, J=19.8, 9.1 Hz, 2H), 4.03 (t, J=6.6 Hz, 2H), 3.30 (dd, J=12.5, 4.2 Hz, 1H), 3.06 (t, J=11.9 Hz, 1H), 2.91 (s, 1H), 1.91-1.76 (m, 2H), 1.64 (dt, J=13.0, 6.6 Hz, 1H). 1.43-1.33 (m, 11H), 0.95 (d, J=6.6 Hz, 6H).

Compound 801 was prepared from (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)-1,2,4-oxadiazol-3-yl)phenyl)propanoic acid (Compound 2) using General Procedures 7 then 8.

Compound 802 was prepared from (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)-1,3,4-thiadiazol-2-yl)phenyl)propanoic acid (Compound 83) using General Procedures 7 then 8.

Compound 804 was prepared from (S)-2-(4-(tert-butyl)benzamido)-3-(4-(4-(4-(heptyloxy)phenyl)piperazin-1-yl)phenyl)propanoic acid (Compound 267) using General Procedures 7 and 8.

Compounds 806 and 807 were prepared from (S)-2-(4-(tert-butyl)benzamido)-3-(4-(6-(heptyloxy)quinolin-2-yl)phenyl)propanoic acid (Compound 671) using General Procedures 7 then 8.

Compound 808 was prepared from (S)-2-(4-(tert-butyl)benzamido)-3-(4-(7-(heptyloxy)isoquinolin-3-yl)phenyl)propanoic acid (Compound 672) using General Procedures 7 then 8.

Compound 809 and 810 were prepared from (S)-2-(4-(tert-butyl)benzamido)-3-(4-(6-(heptyloxy)quinazolin-2-yl)phenyl)propanoic acid (Compound 673) using General Procedures 7 then 8.

Compound 811 was prepared from (S)-tert-butyl 2-(((benzyloxy)carbonyl)amino)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propanoate (INT-6) and 5-bromo-2-iodopyridine using General Procedures 10, 10, 8, 7, 18, 7 and 8 sequentially.

Compound 812 was prepared from 2-bromo-5-iodo-3-methylpyridine and (S)-tert-butyl 2-(((benzyloxy)carbonyl)amino)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl) phenyl)propanoate (INT-6) using General Procedures 10, 10, 8, 7, 18, 7 and 8 sequentially.

Compounds 813-830 and 832-843 were prepared from tert-butyl ((S)-2-amino-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)-D-alaninate (INT-24) using General Procedures 7 then 8.

Compounds 844, 853 and 855-868 were prepared from methyl (S)-1-((S)-2-amino-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)pyrrolidine-3-carboxylate (INT-39) using General Procedures 7 then 8.

Compounds 869 and 870 were prepared from (S)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)-2-(4-(pyrrolidin-1-yl)benzamido)propanoic acid (Compound 90) using General Procedures 7 then 8.

Compounds 871-879 were prepared from (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl) propanoic acid (Compound 192) using General Procedures 7 then 8.

Compounds 880-882 and 888 were prepared from (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl) propanoic acid (Compound 192) using General Procedures 7 then 4.

Compound 883 was prepared from (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl) propanoic acid (Compound 192) and methyl (2S,3S)-2-amino-3-((tert-butoxycarbonyl)amino)-3-phenylpropanoate using General Procedures 7, 4 then 8.

Compounds 884, 885 and 887 were prepared from (S)-1-(((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)pyrrolidine-3-carboxylic acid (Compound 349) using General Procedure 7.

Compound 886 was prepared from (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl) propanoic acid (Compound 192) using General Procedure 7.

Compound 889 was prepared from (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl) propanoic acid (Compound 192) using General Procedures 7 then 8.

methyl 2-amino-3-methoxy-3-phenylpropanoate

To a stirring solution of threo-methyl 2-((tert-butoxycarbonyl)amino)-3-hydroxy-3-phenylpropanoate (148 mg, 0.5 mmol) in DCM (5 mL) was added proton sponge (430 μL, 2.0 mmol), 4 Å molecular sieves (520 mg) and trimethyloxonium tetrafluoroborate (260 mg). The reaction mixture was stirred vigorously at room temperature for 24 hours and the solids were removed by filtration. The filtrate was washed with 10% aqueous copper sulfate (10 mL), saturated aqueous ammonium chloride (10 mL), saturated aqueous sodium bicarbonate (10 mL), and brine (10 mL). The organic layer was dried over magnesium sulfate and concentrated. The crude compound was purified by column chromatography (0-100% EA in hexanes) to afford 86 mg of methyl 2-((tert-butoxycarbonyl)amino)-3-methoxy-3-phenylpropanoate which was dissolved in DCM (1 mL) and treated with TFA (425 μL). After 1 hour, all solvent was removed to give 96 mg (59%) of methyl 2-amino-3-methoxy-3-phenylpropanoate. LCMS-ESI (m/z) calculated for C₁₁H₁₅NO₃: 209.1. found 210.1 [M+H]⁺, t_(R)=1.46 min (Method 16).

Compound 890 was prepared from methyl 2-amino-3-methoxy-3-phenylpropanoate and (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl) propanoic acid (Compound 192) using General Procedures 7 then 4.

Compound 891 was prepared from 1-tert-butyl 3-methyl piperazine-1,3-dicarboxylate and (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy) phenyl)pyrimidin-2-yl)phenyl) propanoic acid (Compound 192) using General Procedures 7, 4 then 8.

Compound 892 was prepared from 1,3-pyrrolidinedicarboxylic acid, 5-methyl-, 1-(1,1-dimethylethyl) ester using General Procedures 22 then 8, and (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl) propanoic acid (Compound 192) using General Procedures 7 then 4.

Compound 893 was prepared from (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 85) and 1,3-pyrrolidinedicarboxylic acid, 5-methyl-, 1-(1,1-dimethylethyl) ester using General Procedures 22, 8, 7 then 4.

Compound 894 was prepared from 3-(aminomethyl)-1-methylpyrrolidin-3-ol and (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl) phenyl) propanoic acid (Compound 192) using General Procedure 7.

Compound 895 was prepared from (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl) propanoic acid (Compound 192) and (2R,3R)-methyl 2-amino-3-hydroxybutanoate hydrochloride using General Procedures 7, 28 and 29 sequentially.

Compounds 896-899 were prepared from 2-amino-3-phenylbutanoic acid using General Procedure 79, and (S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl) propanoic acid (INT-22) using General Procedures 7, 18, 7 and 4 sequentially.

Compounds 900-908 and 911-918 were prepared from a suitable aminoalcohol, prepared using General Procedure 30, and (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl) propanoic acid (Compound 192) using General Procedures 7 and 8 sequentially.

Compound 909 was prepared from (2S,3S)-2-((tert-butoxycarbonyl)amino)-3-phenylbutanoic acid using General Procedure 22, and (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl) propanoic acid (Compound 192) using General Procedures 7 and 4 sequentially.

Compound 910 was prepared from (2R, 3R)-2-((tert-butoxycarbonyl)amino)-3-phenylbutanoic acid using General Procedure 22, and (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl) propanoic acid (Compound 192) using General Procedures 7 and 4 sequentially.

Compounds 919-922, 944 and 945 were prepared from tert-butyl (S)-1-(2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-hydroxyphenyl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate (INT-48) using General Procedures 12 then 8.

tert-butyl 2-((S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanamido)-3-(tert-butoxy)-3-phenylpropanoate

Prepared using General Procedure 7. To a stirring solution of tert-butyl 2-amino-3-(tert-butoxy)-3-phenylpropanoate (198 mg, 0.7 mmol) in DMF (5 mL) were added DIEA (267 μL, 1.54 mmol), and tert-butyl (S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoate (INT-17) (300 mg, 0.6 mmol). The solution was cooled to 0° C. at ice bath and then HATU (245 mg, 0.6 mmol) was added. The reaction was stirred for 1 hour at 0° C., and then warmed to RT with stirring for 2 hours. The reaction solution was diluted with aqueous NaHCO₃ (50 mL) and extracted with EA (3×50 mL). The combined organics were dried over Na₂SO₄ and purified by chromatography (EA/Hexanes) to afford 308 mg (67%) of tert-butyl 2-((S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanamido)-3-(tert-butoxy)-3-phenylpropanoate. LCMS-ESI (m/z) calculated for C₃₉H₄₇BrN₄O₅S: 763.79. found 764.2 [M+H]⁺, t_(R)=4.64 min. (Method 15).

Compounds 925-934 and 943 were prepared from tert-butyl 2-((S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanamido)-3-(tert-butoxy)-3-phenylpropanoate using General Procedure 10 then 8.

tert-butyl 3-(tert-butoxy)-2-((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-hydroxyphenyl)pyrimidin-2-yl)phenyl)propanamido)-3-phenylpropanoate (INT-51)

To a 100 ml flask were added (4-hydroxyphenyl)boronic acid (63 mg, 0.5 mmol), sodium carbonate decahydrate (217 mg, 0.8 mmol), tert-butyl 2-((S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanamido)-3-(tert-butoxy)-3-phenylpropanoate (290 mg, 0.4 mmol), Pd(dppf)Cl₂ (28 mg, 0.04 mmol), dioxane (10.0 mL), and water (2.0 mL). The reaction mixture was heated to 80° C. overnight. The reaction mixture was dried under reduced pressure to remove the solvent and diluted in DCM (20 mL). The mixture was washed with aqueous NaHCO₃ (3×10 mL). The combined organics were dried over Na₂SO₄ and evaporated to afford 309 mg (106%) of crude tert-butyl 3-(tert-butoxy)-2-((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-hydroxyphenyl)pyrimidin-2-yl)phenyl)propanamido)-3-phenylpropanoate (INT-51) which was used without further purification. LCMS-ESI (m/z) calculated for C₄₅H₅₂N₄O₆S: 776.9. found 721 [M−tBuO]+, t_(R)=11.03 min. (Method 14).

Compounds 923, 924 and 935-942 were prepared from tert-butyl 3-(tert-butoxy)-2-((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-hydroxyphenyl)pyrimidin-2-yl)phenyl)propanamido)-3-phenylpropanoate (INT-51) using General Procedure 12 followed by General Procedure 8.

Compound 946 was prepared from 2-bromo-5-iodo-3-methylpyridine and 4-(heptyloxy)phenyl boronic acid using General Procedure 10, and then with (S)-tert-butyl 2-(((benzyloxy)carbonyl)amino)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl) propanoate (INT-6) using General Procedures 10, 18, 7 and 8 sequentially.

methyl 2-((S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin 2-yl)phenyl)propanamido)-3-hydroxy-3-phenylpropanoate

Prepared using General Procedure 7. To a stirring solution of methyl 2-amino-3-hydroxy-3-phenylpropanoate hydrochloride (0.92 g, 3.96 mmol) in DMF (10 mL) were added DIEA (0.85 g, 6.6 mmol) and (S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl) propanoic acid (INT-22) (1.50 g, 2.64 mmol). The solution was cooled to 0° C. and HATU (0.93 g, 3.96 mmol) in 2 mL DMF solution was slowly added. The reaction was stirred 1 hour at 0° C. and then warmed to RT with stirring for 2 hours. The mixture was diluted with DCM (3×20 mL) and washed with aqueous NaHCO₃ (3×10 mL). The combined organics were dried over MgSO₄. The organic layer was concentrated to afford 1.5 g (76%) of methyl 2-((S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanamido)-3-hydroxy-3-phenylpropanoate as a solid powder. LCMS-ESI (m/z) calculated for C₄₄H₄₈N₄O₇: 744.4. found 745.3 [M+H]⁺, t_(R)=4.57 min (Method 16). ¹H NMR (400 MHz, DMSO) δ 9.20 (s, 2H), 8.50 (d, J=8.9 Hz, 1H), 8.40-8.14 (m, 2H), 7.82 (d, J=8.7 Hz, 2H), 7.59 (d, J=9.0 Hz, 1H), 7.31 (dddd, J=43.2, 15.1, 13.9, 7.0 Hz, 12H), 7.10 (d, J=8.8 Hz, 2H), 6.01 (dd, J=14.5, 4.6 Hz, 1H), 5.33-5.03 (m, 1H), 5.04-4.77 (m, 2H), 4.67 (dd, J=9.0, 3.1 Hz, 0.5H), 4.56 (dd, J=8.5, 3.3 Hz, 0.5H), 4.43 (dd, J=19.9, 8.5 Hz, 1H), 4.04 (t, J=6.5 Hz, 2H), 3.70 (s, 1H), 3.62 (s, 2H), 2.72 (dd, J=15.4, 6.7 Hz, 1H), 2.47-2.29 (m, 1H), 1.87-1.58 (m, 2H), 1.43 (dd J=15.1, 7.1 Hz, 2H), 1.33 (dd, J=17.5, 8.9 Hz, 6H), 0.88 (t, J=6.8 Hz, 3H).

methyl 2-((S)-2-amino-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl) propanamido)-3-hydroxy-3-phenylpropanoate (INT-49)

Prepared using General Procedure 18. To a stirring solution of methyl 2-((S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl) phenyl)propanamido)-3-hydroxy-3-phenylpropanoate (1.3 g, 1.75 mmol) in THF (25 mL) was added Pd/C (200.0 mg, 10% Pd/C). The solution was degassed and then stirred under H₂ at room temperature for 18 hours. The solution was filtered through celite and concentrated to afford 0.86 g (81%) of methyl 2-((S)-2-amino-3-(4-(5-(4-(heptyloxy)phenyl)primidin-2-yl)phenyl)propanamido)-3-hydroxy-3-phenylpropanoate (INT-49) as a solid. LCMS-ESI (m/z) calculated for C₃₆H₄₂N₄O₅: 610.3. found 611.3 [M+H]⁺, t_(R)=4.092 min (Method 16). ¹H NMR (400 MHz, DMSO) δ 9.21 (t, J=2.4 Hz, 2H), 9.12 (dd, J=13.4, 8.9 Hz, 1H), 8.38 (dd, J=13.1, 5.4 Hz, 1H), 8.32-8.20 (m, 1H), 8.01 (d, J=32.8 Hz, 2H), 7.82 (d, J=8.7 Hz, 2H), 7.49 (dt, J=17.2, 8.9 Hz, 2H), 7.37 (dd, J=15.1, 7.1 Hz, 2H), 7.26 (dt, J=14.4, 7.3 Hz, 1H), 7.14 (dd, J=30.9, 8.1 Hz, 2H), 7.04 (d, J=8.3 Hz, 1H), 5.25 (dd, J=29.7, 16.8 Hz, 1H), 4.75 (dd, J=9.2, 2.8 Hz, 0.5H), 4.62 (dd, J=8.4, 3.3 Hz, 0.5H), 4.21 (d, J=15.3 Hz, 1H), 4.04 (t, J=6.5 Hz, 2H), 3.74 (s, 2H), 3.67 (d, J=5.8 Hz, 1H), 3.04-2.75 (m, 1H), 2.55 (s, 3H), 1.81-1.66 (m, 2H), 1.51-1.38 (m, 2H), 1.33 (dd, J=15.7, 10.4 Hz, 6H), 0.88 (t, J=6.8 Hz, 3H).

Compounds 947-960 were prepared from methyl 2-((S)-2-amino-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanamido)-3-hydroxy-3-phenylpropanoate (INT-49) using General Procedures 7 then 4.

Compounds 961-978 were prepared from (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl) propanoic acid (Compound 192) using General Procedure 7.

Compounds 984-989, 991 and 1047 were prepared from (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl) propanoic acid (Compound 192) using General Procedures 7 then 8.

Compounds 979-983 and 990 were prepared from (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(2′,4′-difluoro-[1,1′-biphenyl]-4-yl)-1,2,4-oxadiazol-3-yl)phenyl)propanoic acid (Compound 24) using General Procedures 7 then 8.

Compounds 992-1046 and 1050-1055 were prepared from tert-butyl ((S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)-D-alaninate using General Procedures 10 then 8.

Compounds 1048 and 1049 were prepared from (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl) propanoic acid (Compound 192) using General Procedures 7 then 8.

tert-butyl (S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl)-phenyl)pyrimidin-2-yl)phenyl)propanoate

Prepared using General Procedure 10: A stirred solution of (S)-tert-butyl 2-(((benzyloxy)carbonyl)amino)-3-(4-(5-bromopyrimidin-2-yl)phenyl)propanoate (INT-7) (20 g, 39.0 mmol) in dioxane (200 mL) was treated with (4-((1r,4r)-4-ethylcyclohexyl)phenyl)boronic acid (9.97 g, 42.9 mmol) and NaHCO₃ (87 mL of a 0.9 M aqueous solution, 78 mmol). The mixture was warmed to 40° C., de-gassed, then treated with PdCl₂dppf (0.714 g, 0.976 mmol) and heated under reflux. After 3 h, the mixture was allowed to cool then diluted with water (300 mL) and extracted with DCM (3×100 mL). The combined organics were evaporated and re-slurried from MeOH (250 mL) to afford 23.5 g (97%) of tert-butyl (S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl)phenyl)pyrimidin-2-yl)phenyl)propanoate as a grey powder. LCMS-ESI (m/z) calculated for C₃₉H₄₅N₃O₄: 619.3; no m/z observed, t_(R)=12.33 min (Method 10).

(S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl) phenyl) pyrimidin-2-yl)phenyl)propanoic acid

Prepared using General Procedure 8: A stirred solution of (S)-tert-butyl 2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl)phenyl)pyrimidin-2-yl) phenyl)propanoate (13.33 g, 21.51 mmol) in DCM (100 mL) was treated with TFA (50 mL, 21.51 mmol). After 16 h, solvents were evaporated and the residue further evaporated with toluene (2×50 mL) to afford 12.1 g (100%) of (S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl)phenyl)pyrimidin-2-yl)phenyl)propanoic acid as a white solid. LCMS-ESI (m/z) calculated for C₃₅H₃₇N₃O₄: 563.3. found 564.3 [M+H]⁺, t_(R)=3.20 min (Method 11).

tert-butyl ((S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl)phenyl)pyrimidin-2-yl)phenyl)propanoyl)-D-alaninate

Prepared using General Procedure 7: To a stirred solution of (S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl)phenyl)pyrimidin-2-yl)phenyl)propanoic acid (8.9 g, 15.79 mmol) in DMF (150 mL) was added (R)-tert-butyl 2-aminopropanoate, HCl (3.44 g, 18.95 mmol) and DIEA (8.27 mL, 47.4 mmol) and the mixture cooled to 0° C. whereupon HATU (7.20 g, 18.95 mmol) was added in small portions. After 2 h, the mixture was quenched with 10% aqueous citric acid (150 mL) and the liquors decanted. The residue was dissolved in EA (500 mL) and the resulting solution washed successively with water (100 mL) and brine (100 mL), dried over MgSO₄ and solvents evaporated. Column chromatography (ACN/DCM) gave 8 g (73%) of (R)-tert-butyl 2-((S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl)phenyl) pyrimidin-2-yl)phenyl)propanamido)propanoate as a yellow solid. LCMS-ESI (m/z) calculated for C₄₂H₅₀N₄O₅: 690.4; no m/z observed, t_(R)=3.04 min (Method 11).

tert-butyl ((S)-2-amino-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl)phenyl)pyrimidin-2-yl)phenyl) propanoyl)-D-alaninate

Prepared using General Procedure 18: A stirred mixture of (R)-tert-butyl 2-((S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl) phenyl) pyrimidin-2-yl)phenyl)propanamido)propanoate (8 g, 11.58 mmol) and 10% Pd/C (Johnson and Matthey Type 39 paste 1.23 g) in THF (100 mL) was hydrogenated at 4 bar. After 6 h, the mixture was filtered through Celite and evaporated to afford 6.45 g (100%) of tert-butyl ((S)-2-amino-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl) phenyl) pyrimidin-2-yl)phenyl)propanoyl)-D-alaninate. LCMS-ESI (m/z) calculated for C₃₄H₄₄N₄O₃: 556.3. found 557.3 [M+H]⁺, t_(R)=3.26 min (Method 11).

tert-butyl ((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl)phenyl)pyrimidin-2-yl)phenyl)propanoyl)-D-alaninate

Prepared using General Procedure 7: To a stirred solution of (R)-tert-butyl 2-((S)-2-amino-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl)phenyl)pyrimidin-2-yl)phenyl) propanamido)propanoate (6.5 g, 11.68 mmol) and 5-(tert-butyl)thiophene-2-carboxylic acid (2.58 g, 14.01 mmol) in DMF (80 mL) was added DIEA (6.12 mL, 35.0 mmol) and the mixture cooled to −5° C. HATU (5.33 g, 14.01 mmol) was added in small portions such that the internal temperature was maintained below 0° C. After a further 2 h, the reaction was treated with 10% aqueous citric acid (50 mL) and water (100 mL). The liquors were decanted and the precipitate extracted into EA (3×150 mL). The combined organic extracts were washed successively with water (100 mL) and brine (100 mL), dried over MgSO₄ and solvents evaporated. The residue was purified by column chromatography (ACN/DCM) to afford 7.4 g (88%) of tert-butyl ((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl) phenyl) pyrimidin-2-yl)phenyl)propanoyl)-D-alaninate. LCMS-ESI (m/z) calculated for C₄₃H₅₄N₄O₄S: 722.4; no m/z observed, t_(R)=3.20 min (Method 11).

(S)-2(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl)phenyl)pyrimidin-2-yl)phenyl)propanoyl)-D-alanine (Compounds 1056)

Prepared using General Procedure 8: To a stirred solution of (R)-tert-butyl 2-4S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl) phenyl)-pyrimidin-2-yl)phenyl)propanamido)propanoate (7.4 g, 10.24 mmol) in DCM (100 mL) was added TFA (47.3 mL). After 16 h, the mixture was diluted with toluene (100 mL) and solvents evaporated. The residue was purified by column chromatography (iso-hexanes/DCM/THF/EA/AcOH) to afford a white solid. Re-slurry from diethyl ether/iso-hexanes gave 5.5 g (81%) of ((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl) phenyl) pyrimidin-2-yl)phenyl)propanoyl)-D-alanine (Compound 1056). LCMS-ESI (m/z) calculated for C₃₉H₄₆N₄O₄S: 666.3; no m/z observed, t_(R)=3.20 min (Method 11). The chiral purity was >95% e.e (Chiral Method). ¹H NMR (400 MHz, DMSO-d6) δ 12.61 (s, 1H), 9.17 (s, 2H), 8.53 (d, J=8.8 Hz, 1H), 8.45 (d, J=7.5 Hz, 1H), 8.31 (d, J=8.4 Hz, 2H), 7.79-7.71 (m, 2H), 7.69 (d, J=3.9 Hz, 1H), 7.50 (d, J=8.4 Hz, 2H), 7.45-7.34 (m, 2H), 6.92 (d, J=3.8 Hz, 1H), 4.82 (td, J=9.7, 9.2, 4.5 Hz, 1H), 4.25 (p, J=7.3 Hz, 1H), 3.20-2.98 (m, 2H), 2.58-2.50 (m, 1H), 1.85 (d, J=11.0 Hz, 4H), 1.58-1.41 (m, 2H), 1.34-1.14 (m, 15H), 1.07 (t, J=11.4 Hz, 2H), 0.90 (t, J=7.2 Hz, 3H).

methyl 1-((S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl)phenyl) pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate

Prepared using General Procedure 7: To a stirred solution of (S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl)phenyl) pyrimidin-2-yl)phenyl)propanoic acid (12.1 g, 21.5 mmol) and methyl azetidine-3-carboxylate hydrochloride (10.10 g, 88 mmol) in DMF (260 mL) at −7° C. was added DIEA (25.5 mL, 146 mmol). After 10 min, HATU (32.4 g, 85 mmol) was added in small portions such that the internal temperature was maintained below −5° C. After 3 h, the reaction was quenched with citric acid (200 mL of a 10% aqueous solution) and extracted with DCM (3×100 mL). The combined organic extracts were washed with NaHCO₃ (150 mL), dried over MgSO₄ and solvents evaporated. The residue was re-slurried from EA (200 mL) to afford 12 g (79%) of methyl 1-((S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl)phenyl) pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate as a white solid. LCMS-ESI (m/z) calculated for C₄₀H₄₄N₄O₅: 660.3. found 661.3 [M+H]⁺, t_(R)=3.21 min (Method 11).

methyl 1-((S)-2-amino-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl)phenyl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate

Prepared using General Procedure 18: A stirred mixture of methyl 1-((S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl) phenyl) pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate (12.5 g, 18.92 mmol) and 10% Pd/C (1.2 g, Johnson and Matthey Type 39 Paste) in THF (120 mL) and EtOH (12 mL) was hydrogenated under 5 bar. After 16 h, the mixture was diluted with THF (200 mL), filtered through Celite and solvents evaporated. Column chromatography (DCM/NH₃/MeOH) gave 7 g (70%) of methyl 1-((S)-2-amino-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl)phenyl)pyrimidin-2-yl)phenyl) propanoyl)azetidine-3-carboxylate as a white solid. LCMS-ESI (m/z) calculated for C₃₂H₃₈N₄O₃: 526.3. found 527.3 [M+H]⁺, t_(R)=2.35 min (Method 11).

methyl 1-((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl)phenyl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate

Prepared using General Procedure 7: To a stirred solution of 5-(tert-butyl)thiophene-2-carboxylic acid (2.69 g, 14.62 mmol) and DIEA (9.29 mL, 53.2 mmol) in DMF/DCM (1:1, 70 mL) was added in small portions HAIL′ (5.31 g, 13.96 mmol), such that the internal temperature did not exceed 20° C. After 20 min, a solution of methyl 1-((S)-2-amino-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl)phenyl)pyrimidin-2-yl)phenyl)propanoyl) azetidine-3-carboxylate (7 g, 13.29 mmol) in DMF/DCM (1:1, 90 mL) and DIEA (2.32 mL, 13.29 mmol) was added slowly, to maintain internal temperature below 20° C. (ice-water cooling applied). After 1 h, water (100 mL) was added. After a further 1 h, more water (200 mL) was added and the mixture extracted with DCM (3×150 mL). The combined organic extracts were dried over MgSO₄ and solvents evaporated. Column chromatography (DCM/iso-hexanes/EA) gave 7.13 g (78%) of methyl 1-((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl)phenyl)pyrimidin-2-yl)phenyl) propanoyl)azetidine-3-carboxylate as a white solid. LCMS-ESI (m/z) calculated for C₄₁H₄₈N₄O₄S: 692.3. found 693.3 [M+H]⁺, t_(R)=3.20 min (Method 11).

1-((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl) phenyl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylic acid (Compound 1057)

To a stirred solution of methyl 1-((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl)phenyl)pyrimidin-2-yl)phenyl) propanoyl)azetidine-3-carboxylate (7.14 g, 10.30 mmol) in THF (150 mL) at 0° C. was added sulfuric acid (82 mL of a 5 M aqueous solution, 412 mmol). After 10 min, the cooling bath was removed. After 16 h, the mixture was diluted with brine (100 mL) and extracted with DCM (3×100 mL). The combined organic extracts were washed with brine (2×100 mL), dried over MgSO₄ and solvents evaporated. Column chromatography (DCM/iso-hexanes/EA/AcOH) gave 3.5 g (50%) of 1-((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl) phenyl) pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylic acid (Compound 1057) as a white solid. LCMS-ESI (m/z) calculated for C₄₀H₄₆N₄O₄S: 678.3. found 679.3 [M+H]⁺, t_(R)=3.35 min (Method 11). The chiral purity was >95% e.e (Chiral Method). ¹H NMR (400 MHz, DMSO-d6) δ 12.73 (s, 1H), 9.18 (app d, J=1.8 Hz, 2H), 8.77 (app dd, J=8.2, 2.6 Hz, 1H), 8.52-8.17 (m, 2H), 7.76 (d, J=8.1 Hz, 2H), 7.70 (d, J=3.9 Hz, 1H), 7.47 (app dd, J=8.3, 1.5 Hz, 2H), 7.40 (d, J=8.0 Hz, 2H), 6.93 (app dd, J=3.9, 1.4 Hz, 1H), 4.86-4.54 (m, 1H), 4.43 (t, J=8.0, 0.5H), 4.32-4.28 (m, 0.5H) 4.23-4.14 (m, 1H), 4.11-3.97 (m, 1H), 3.96-3.83 (m, 1H), 3.48-3.40 (m, 0.5H), 3.32-3.29 (m, 0.5H), 3.18-2.98 (m, 2H), 2.58-2.51 (m, 1H), 1.85 (app d, J=10.0 Hz, 4H), 1.53-1.44 (m, 2H), 1.38-1.15 (m, 12H), 1.10-1.01 (m, 2H), 0.90 (t, J=7.1 Hz, 3H).

tert-butyl (S)-2-amino-3-(4-(5-(4-((1s,4s)-4-ethylcyclohexyl)phenyl)pyrimidin-2-yl)phenyl) propanoate (INT-78)

Prepared using General Procedure 18: A stirred mixture of (S)-tert-butyl 2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-((1s,4s)-4-ethylcyclohexyl) phenyl) pyrimidin-2-yl) phenyl)propanoate (8.96 g, 14.46 mmol) and 10% Pd/C (1 g, Johnson and Matthey Type 39 Paste) in THF (100 mL) was hydrogenated under a balloon. After 40 h, the mixture was diluted with THF (40 mL) and further 10% Pd/C (1.5 g, Johnson and Matthey Type 39 Paste) was charged. The mixture was hydrogenated under 4 bar for a further 8 h, then 2 bar for 16 h. The mixture was filtered through Celite and solvents evaporated to afford 6.65 g (95%) of tert-butyl (S)-2-amino-3-(4-(5-(4-((1s,4s)-4-ethylcyclohexyl)phenyl)pyrimidin-2-yl)phenyl) propanoate (INT-78). LCMS-ESI (m/z) calculated for C₃₁H₃₉N₃O₂: 485.3. found 486.3 [M+H]⁺, t_(R)=7.32 min (Method 10).

tert-butyl (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl)phenyl)pyrimidin-2-yl)phenyl)propanoate

Prepared using General Procedure 7: To a stirred solution of 5-(tert-butyl)thiophene-2-carboxylic acid (2.78 g, 15.06 mmol) and DIEA (7.58 mL, 41.1 mmol) in DMF (100 mL) was added in small portions HATU (5.47 g, 14.38 mmol). After 30 min, this mixture was added to a stirred suspension of (S)-tert-butyl 2-amino-3-(4-(5-(4-((1s,4s)-4-ethylcyclohexyl)phenyl)pyrimidin-2-yl)phenyl)propanoate (6.65 g, 13.69 mmol) in DMF (70 mL) After 1 h, the mixture was quenched with 1 M aqueous HCl (100 mL) and water (150 mL). The product was collected by filtration, washing successively with water (3×100 mL), MeOH (50 mL), iso-hexanes (3×50 mL), MeOH (50 mL) and iso-hexanes (50 mL) to afford 7.95 g (89%) of tert-butyl (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl) phenyl) pyrimidin-2-yl)phenyl)propanoate. LCMS-ESI (m/z) calculated for C₄₀H₄₉N₃O₃S: 651.4. found 652.3 [M+H]⁺, t_(R)=3.70 min (Method 6).

(S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl)phenyl)pyrimidin-2-yl)phenyl)propanoic acid (compound 1058)

Prepared using General Procedure 8: To a stirred solution of (S)-tert-butyl 2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl) phenyl) pyrimidin-2-yl)phenyl)propanoate (3.60 g, 5.52 mmol) in DCM (23 mL) was added TFA (13 mL). After 4 h, the mixture was poured onto ice-water (200 mL) and extracted with DCM (3×75 mL). The solvents were evaporated and the residue purified by column chromatography (DCM/EA/AcOH) to afford a white solid that was re-slurried from Et₂O to afford 2.66 g (81%) of (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl)phenyl)pyrimidin-2-yl)phenyl) propanoic acid (Compound 1058). LCMS-ESI (m/z) calculated for C₃₆H₄₁N₃O₃S: 595.3; no m/z observed, t_(R)=11.33 min (Method 10). The chiral purity was >95% e.e (Chiral Method). ¹H NMR (400 MHz, DMSO-d6) δ 12.88 (s, 1H), 9.18 (s, 2H), 8.68 (d, J=8.3 Hz, 1H), 8.37-8.30 (m, 2H), 7.76 (d, J=8.3 Hz, 2H), 7.64 (d, J=3.9 Hz, 1H), 7.47 (d, J=8.4 Hz, 2H), 7.43-7.36 (m, 2H), 6.93 (d, J=3.9 Hz, 1H), 4.67-4.12 (m, 1H), 3.27 (dd, J=13.9, 4.5 Hz, 1H), 3.12 (dd, J=13.9, 10.6 Hz, 1H), 2.57-2.46 (m, 1H), 1.85 (d, J=9.8 Hz, 4H), 1.55-1.41 (m, 2H), 1.32 (s, 12H), 1.07 (dd, J=13.2, 10.0 Hz, 2H), 0.90 (t, J=7.2 Hz, 3H).

1-(4-((1r,4r)-4-ethylcyclohexyl)phenyl)piperazine (INT-69)

To a stirred solution of tert-butyl piperazine-1-carboxylate (870 mg, 4.67 mmol) in DCM (60 mL) was added (4-((1r,4r)-4-ethylcyclohexyl)phenyl)boronic acid (2.2 g, 9.34 mmol), DIEA (3.15 mL, 18.68 mmol) Cu(OAc)₂ (1.73 g, 9.34 mmol) and molecular sieves (4 Å powder). The mixture was allowed to stir in air for 16 h then diluted with DCM (50 mL) and filtered. The liquors were washed successively with saturated aqueous NaHCO₃ (50 mL) and brine (50 mL), dried over MgSO₄ and solvents evaporated. The residue was taken up in dioxane (20 mL) then stirred with HCl (11.7 mL, of a 4 M solution in dioxane, 46.7 mmol). After 16 h, the mixture was poured into water (100 mL), basified with 1 M NaOH and extracted with DCM (3×150 mL). The solvents were evaporated and the resulting solid re-slurried from ACN. The liquors were evaporated and purified by column chromatography to afford 550 mg (42%) of 1-(4-((1r,4r)-4-ethylcyclohexyl)phenyl)piperazine (INT-69). LCMS-ESI (m/z) calculated for C₁₈H₂₈N₂: 272.2. found 273.4 [M+H]⁺, t_(R)=1.80 min (Method 11).

Compound 1059 was prepared from tert-butyl (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(((trifluoromethyl) sulfonyl)oxy)phenyl)propanoate (INT-15) and 1-(4-((1r,4r)-4-ethylcyclohexyl)phenyl)piperazine (INT-69) using General Procedures 11 and 8 sequentially.

Compound 1060 was prepared from (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(4-(4-((1r,4r)-4-ethylcyclohexyl)phenyl)piperazin-1-yl)phenyl)propanoic acid (Compound 1059) using General Procedures 7 and 4 sequentially.

Compound 1061 was prepared from tert-butyl (S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoate (INT-17) using General Procedures 10 then 8.

2-Bromo-5-(heptyloxy)pyridine was prepared from 6-bromopyridin-3-ol and 1-bromoheptane using General Procedure 12.

Compound 1062 was prepared from tert-butyl (S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoate (INT-17) and 2-bromo-5-(heptyloxy)pyridine using General Procedures 10 then 8.

Compounds 1063-1066 were prepared from (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(5-(heptyloxy)pyridin-2-yl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 1062) using General Procedures 7 then 8.

Compound 1067 was prepared from tert-butyl (S)-3-(4-bromophenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoate tert-butyl (S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoate (INT-17) using General Procedures 8, 7, 10 and 8 sequentially.

Compound 1068-1083 were prepared from (S)-tert-butyl 1-((S)-2-amino-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)pyrrolidine-2-carboxylate (INT-26) using General Procedures 7 then 8.

Compounds 1084-1087 were prepared from methyl (S)-1-((S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)pyrrolidine-3-carboxylate (INT-35) using General Procedures 10 then 4.

(4-(4,4-dimethylcyclohexyl)phenyl)boronic acid was prepared from 4-(4,4-dimethylcyclohexyl)phenol using General Procedures 9 then 10.

Compound 1088 was prepared from tert-butyl (S)-1-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)azetidine-3-carboxylate (INT-38) and (4-(4,4-dimethylcyclohexyl)phenyl)boronic acid using General Procedures 10 then 8.

Compounds 1089-1093 were prepared from tert-butyl (S)-1-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)azetidine-3-carboxylate (INT-38) using General Procedures 10 then 8.

Compounds 1094-1098 were prepared from methyl (S)-1-((S)-2-amino-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)pyrrolidine-3-carboxylate (INT-39) using General Procedures 7 then 4.

tert-butyl (S)-1-(2-amido-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl) azetidine-3-carboxylate (INT-53)

Prepared using General Procedure 18. To a stirring solution of tert-butyl (S)-1-(2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl) azetidine-3-carboxylate (2.1 g, 3.0 mmol) in THF (30 mL) was added Pd/C (0.32 g, 0.3 mmol) and the reaction was flushed with hydrogen gas three times. The reaction mixture was stirred under an atmosphere of hydrogen for 7 hours, filtered over Celite, and concentrated. The crude tert-butyl (S)-1-(2-amino-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl) azetidine-3-carboxylate (INT-53) was used without further purification. LCMS-ESI (m/z) calculated for C₃₄H₄₄N₄O₄: 572.3. found 573.3 [M+H]⁺, t_(R)=4.185 min (Method 16).

Compounds 1099-1122 were prepared from tert-butyl (S)-1-(2-amino-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl) azetidine-3-carboxylate (INT-53) using General Procedures 7 then 8.

(S)-tert-butyl 1-((S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)-thiophene-2-carboxamido)propanoyl)pyrrolidine-2-carboxylate (INT-54)

Prepared using General Procedure 7. To a stirring solution of (S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoic acid (1.0 g, 2.05 mmol), tert-butyl-L-prolinate hydrochloride (468 mg, 2.25 mmol) and DIEA (2.14 mL, 12.3 mmol) in DMF (4.0 mL) at 0° C. was added HATU (856 mg, 2.25 mmol) dissolved in DMF (1.5 mL), portion wise, over 10 minutes. The reaction mixture was allowed to warm to room temperature and stirred overnight. The crude material was diluted in DCM (100 mL), washed with saturated aqueous bicarbonate (70 mL) and brine (70 mL). The organic layer was dried over MgSO₄, filtered, and the solvent removed under reduced pressure. The crude product was purified by chromatography (EA/hexanes) to afford 1.06 g (80%) of (S)-tert-butyl 1-((S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl) pyrrolidine-2-carboxylate (INT-54) as an off white solid. LCMS-ESI (m/z) calculated for C₃₁H₃₇BrN₄O₄S: 640.2. found 641.2 [M+H]⁺, t_(R)=10.68 min (Method 14).

Compounds 1123-1127 were prepared from (S)-tert-butyl 1-(S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl) pyrrolidine-2-carboxylate (INT-54) using General Procedures 10 then 8.

((S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)-L-proline

Prepared using General Procedure 8: To a stirred solution of (S)-tert-butyl 1-((S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido) propanoyl)pyrrolidine-2-carboxylate (INT-54) (6.16 g, 9.60 mmol) in DCM (90 mL) was added TEA (10 mL). After 16 h, solvents were evaporated and the residue purified by column chromatography (DCM/iso-hexanes/EA/AcOH) to afford 3.38 g (60%) of ((S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido) propanoyl)-L-proline. LCMS-ESI (m/z) calculated for C₂₇H₂₉BrN₄O₄S: 584.1. found 585.2 [M+H]⁺, t_(R)=2.49 min (Method 11).

((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl)phenyl) pyrimidin-2-yl)phenyl)propanoyl)-L-proline (Compound 1128)

Prepared using General Procedure 10: To a stirred mixture of (S)-1-((S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido) propanoyl) pyrrolidine-2-carboxylic acid (3.38 g, 5.77 mmol) and (4-((1r,4r)-4-ethylcyclohexyl)phenyl)boronic acid (1.474 g, 6.35 mmol) in dioxane (40 mL) and water (40 mL) was added NaHCO₃ (0.97 g, 11.55 mmol). The mixture was de-gassed, treated with PdCl₂dppf (0.169 g, 0.231 mmol) then heated under reflux for 3 h. The mixture was allowed to cool and extracted with EA (2×50 mL). The combined organic layers were dried over MgSO₄ and solvents evaporated. Column chromatography (iso-hexanes/EA) gave 1.7 g (44%) of ((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl)phenyl)pyrimidin-2-yl)phenyl)propanoyl)-L-proline (Compound 1128). LCMS-ESI (m/z) calculated for C₄₁H₄₈N₄O₄S: 692.3. found 693.3 [M+H]⁺, t_(R)=11.09 min (Method 10). The chiral purity was >95% e.e (Chiral Method). ¹H NMR (400 MHz, DMSO-d6) δ 12.51 (s, 1H), 9.18 (s, 2H), 8.74 (d, J=8.3 Hz, 1H), 8.33 (d, J=8.3 Hz, 2H), 7.80-7.74 (m, 2H), 7.71 (d, J=3.9 Hz, 1H), 7.53 (d, J=8.3 Hz, 2H), 7.40 (d, J=8.4 Hz, 2H), 6.92 (d, J=3.9 Hz, 1H), 5.01-4.81 (m, 1H), 4.30 (dd, J=8.7, 4.3 Hz, 1H), 3.81-3.75 (m, 1H), 3.73-3.55 (m, 1H), 3.21-3.00 (m, 2H), 2.58-2.46 (m, 2H), 2.21-2.14 (m, 1H), 2.03-1.78 (m, 6H), 1.61-1.40 (m, 2H), 1.32-1.23 (m, 12H), 1.10-1.05 (m, 2H), 0.90 (t, J=7.2 Hz, 3H).

tert-butyl ((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrimidin-2-yl)phenyl)propanoyl)-D-alaninate (INT-56)

Prepared using General Procedure 10. Into a solution of tert-butyl ((S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl) thiophene-2-carboxamido) propanoyl)-D-alaninate (1000 mg, 1.6 mmol) and bis(pinacolato)diborane (620 mg, 2.4 mmol) in anhydrous dioxane (20 mL) was added potassium acetate (320 mg, 3.2 mmol). The solution was degassed by N₂ bubbling for 10 min before the addition of PdCl₂(dppf) (120 mg, 0.16 mmol). The mixture was heated in a microwave reactor for 2 hr at 80° C., then cooled, diluted with DCM, washed with water, then dried and concentrated. The resulting crude tert-butyl ((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrimidin-2-yl)phenyl)propanoyl)-D-alaninate (INT-56) was used without further purification. LCMS-ESI (m/z) calculated for C₃₅H₄₇BN₄O₆S: 662.6. found 663.3 [M+H]⁺, t_(R)=4.00 min. (Method 16).

Compounds 1129-1136 were prepared from tert-butyl ((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrimidin-2-yl)phenyl)propanoyl)-D-alaninate (INT-56) using General Procedures 10 then 8.

tert-butyl (S)-1-((S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)-thiophene-2-carboxamido)propanoyl)pyrrolidine-3-carboxylate (INT-57)

Prepared using General Procedure 7: To a stirring solution of tert-butyl-(S)-pyrrolidine-3-carboxylate (2.52 g, 14.7 mmol) in DMF (20 mL) were added DIEA (1.90 g, 14.7 mmol) and (S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2(5-(tert-butyl)thiophene-2-carboxamido)propanoic acid (6.00 mg, 12.3 mmol). The solution was cooled to 0 and HATU (5.60 g, 2.88 mmol) was slowly added. The reaction was stirred for 1 hour at 0° C. and then warmed to RT with stirring for 2 hours. The reaction solution was quenched with aqueous NaHCO₃ (10 mL) and water (20 mL) was added. The half-white precipitate formed was filtered. The filtrate was extracted with EA (3×30 mL) and the precipitate was dissolved in this extract. The combined organic layers were washed with water (2×100 mL), dried over MgSO₄, and evaporated. The crude compound was purified by column chromatography (EA/hexanes) to afford 4.88 g (61%) of tert-butyl (S)-1-((S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl) pyrrolidine-3-carboxylate (INT-57) as a half-white powder. LCMS-ESI (m/z) calculated for C₃₁H₃₇BrN₄O₄S: 641.6. found 642.4 [M+H]⁺, t_(R)=3.95 min. (Method 16).

Compound 1137 was prepared from tert-butyl (S)-1-((S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl) pyrrolidine-3-carboxylate (INT-57) using General Procedures 10 then 8.

tert-butyl (S)-3-(4-bromophenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido) propanoate

Into a solution of tert-butyl (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propanoate (INT-16) (400 mg, 0.8 mmol) in isopropyl alcohol (5 mL) and water (5 mL) was added CuBr₂ (520 mg, 2.4 mmol). The mixture was heated at 70° C. for 15 hr, then diluted with Et₂O and washed with saturated NaCl. The organic layer was dried (Na₂SO₄) and purified by chromatography (EA/hexanes) to provide 230 mg (63%) of tert-butyl (S)-3-(4-bromophenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoate. LCMS-ESI (m/z) calculated for C₂₂H₂₈BrNO₃S: 466.4. found 410.0 [M−tBu]⁺, t_(R)=3.9 min. (Method 16).

(S)-3-(4-bromophenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoic acid

Prepared using General Procedure 8. A solution of tert-butyl (S)-3-(4-bromophenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoate (229 mg, 0.5 mmol) in DCM (5 ml) and TFA (5 mL) was stirred for 15 h at room temperature. The mixture was concentrated to remove the solvents and the crude material was used without further purification to provide 201 mg (100%) of (S)-3-(4-bromophenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoic acid. LCMS-ESI (m/z) calculated for C₁₈H₂₀BrNO₃S: 410.3. found 411.0 [M+H]⁺, t_(R)=2.07 min. (Method 16).

tert-butyl ((S)-3-(4-bromophenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido) propanoyl)-D-alaninate (INT-58)

Prepared using General Procedure 7. Into a solution of (S)-3-(4-bromophenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoic acid (200 mg, 0.5 mmol), H-D-Ala-OtBu (178 mg, 1.0 mmol) and DIEA (196 mg, 0.5 mmol) in DMF (5 ml) was added HATU (200 mg, 0.5 mmol). After 2 h, the mixture was diluted with EA, washed with NaHCO₃ and saturated NaCl, then purified by chromatography (EA/hexanes) to provide 176 mg (66%) of tert-butyl ((S)-3-(4-bromophenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)-D-alaninate (INT-58). LCMS-ESI (m/z) calculated for C₂₅H₃₃BrN₂O₄S: 536.1. found 537.1 [M+H]⁺, t_(R)=3.69 min. (Method 16).

Tert-butyl ((S)-3-(4-(5-(4-bromophenyl)pyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)-D-alaninate (INT-59) was prepared from tert-butyl ((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrimidin-2-yl)phenyl)propanoyl)-D-alaninate (INT-56) and 1-bromo-4-iodobenzene using General Procedure 10.

Compound 1138 was prepared from tert-butyl ((S)-3-(4-(5-(4-bromophenyl)pyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)-D-alaninate (INT-59) using General Procedures 10 then 8.

tert-butyl ((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(3-fluoro-4-hydroxyphenyl) pyrimidin-2-yl)phenyl)propanoyl)-D-alaninate

Prepared using General Procedure 10. Into a solution of tert-butyl ((S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido) propanoyl)-D-alaninate (150 mg, 0.24 mmol) in dioxane (4 mL) and water (2 mL) were added 3-fluoro-4-hydroxyphenyl boronic acid (46 mg, 0.29 mmol), sodium carbonate decahydrate (140 mg, 0.48 mmol), and PdCl₂(dppf) (36 mg, 0.05 mmol). The mixture was heated at 70° C. for 1 hr, then diluted with DCM and washed with H₂O. The resulting crude solution of tert-butyl ((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(3-fluoro-4-hydroxyphenyl)pyrimidin-2-yl)phenyl) propanoyl)-D-alaninate was used crude in the next step. LCMS-ESI (m/z) calculated for C₃₅H₃₉FN₄O₅S: 646.7. found 647.8 [M+H]⁺, t_(R)=3.08 min. (Method 16).

tert-butyl ((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(3-fluoro-4-(((trifluoromethyl) sulfonyl)oxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)-D-alaninate (INT-60)

Prepared using General Procedure 9. Into a solution of crude tert-butyl ((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(3-fluoro-4-hydroxyphenyl) pyrimidin-2-yl) phenyl)propanoyl)-D-alaninate (150 mg, 0.2 mmol) in DCM (9 mL) at 0° C. were added N-phenyl-N-((trifluoromethyl)sulfonyl)methanesulfonamide (92 mg, 0.3 mmol) and DIEA (43 μL, 0.2 mmol). After 4 h, the reaction mixture was diluted with DCM, washed with 10% citric acid, then dried and concentrated. Purification by chromatography (EA/hexanes) provided 149 mg (78%) of tert-butyl ((S)-2-(5-(tert-butyl) thiophene-2-carboxamido)-3-(4-(5-(3-fluoro-4-(((trifluoromethyl) sulfonyl)oxy) phenyl)pyrimidin-2-yl)phenyl)propanoyl)-D-alaninate (INT-60). LCMS-ESI (m/z) calculated for C₃₆H₃₈F₄N₄O₇S₂: 778.8. found 779.8 [M+H]⁺, t_(R)=4.01 min. (Method 16).

Compounds 1139-1141 were prepared from tert-butyl ((S)-2-(5-(tert-butyl) thiophene-2-carboxamido)-3-(4-(5-(3-fluoro-4-(((trifluoromethyl) sulfonyl)oxy) phenyl)pyrimidin-2-yl)phenyl)propanoyl)-D-alaninate (INT-60) using General Procedures 10 then 8.

tert-butyl ((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(((trifluoromethyl)sulfonyl)oxyl)phenyl)pyrimidin-2-yl)phenyl)propanoyl)-D-alaninate (INT-61)

Prepared using General Procedure 9. To a stirring solution of tert-butyl ((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-hydroxyphenyl) pyrimidin-2-yl)phenyl) propanoyl)-D-alaninate (INT-36) (0.32 g, 0.50 mmol) and DIEA (0.11 mL, 0.63 mmol) in DCM (5 mL) at 0° C., was added 1,1,1-trifluoro-N-phenyl-N-((trifluoromethyl)sulfonyl) methanesulfonamide (0.22 g, 0.63 mmol). The reaction was stirred at room temperature overnight and quenched with 10 mL 10% citric acid. The organic layer was separated and washed with saturated sodium bicarbonate. The crude material was purified by column chromatography (EA/hexanes) to afford 0.24 g (63%) of tert-butyl ((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(((trifluoromethyl)sulfonyl)oxy)phenyl) pyrimidin-2-yl)phenyl)propanoyl)-D-alaninate (INT-61) as a solid. LCMS-ESI (m/z) calculated for C₃₆H₃₉F₃N₄O₇S₂: 760.2. found 760.8 [M+H]⁺, t_(R)=4.15 min (Method 16).

Compounds 1142-1145 were prepared from tert-butyl ((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(((trifluoromethyl)sulfonyl)oxy)phenyl) pyrimidin-2-yl)phenyl)propanoyl)-D-alaninate (INT-61) using General Procedures 10, 18, then 8.

Compounds 1146-1151 were prepared from tert-butyl ((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(((trifluoromethyl)sulfonyl)oxy)phenyl) pyrimidin-2-yl)phenyl)propanoyl)-D-alaninate (INT-61) using General Procedures 10 then 8.

tert-butyl (S)-1-(2-(((benzyloxy)carbonyl)amino)-3-(4-(5-bromopyrimidin-2-yl)phenyl) propanoyl)azetidine-3-carboxylate

Prepared using General Procedure 7. Into a DMF (10.0 mL) solution of tert-butyl azetidine-3-carboxylate (6.79 g, 35.16 mmol) were added DIEA (5.45 g, 42.18 mmol), and (S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-bromopyrimidin-2-yl)phenyl)propanoic acid (3.21 g, 7.03 mmol). The solution was cooled to −15° C. and then HATU (8.27 g, 35.16 mmol) in 15 mL DMF solution was slowly added. The reaction was stirred 1 hour at −15° C. and then warmed to RT with stirring for 2 hours. The reaction solution was diluted with DCM (20 mL) and washed with aqueous NaHCO₃ (3×10 mL). The organic layer was concentrated and purified by chromatography (EA/hexanes) to afford 3.2 g (76.6%) of tert-butyl (S)-1-(2-(((benzyloxy)carbonyl)amino)-3-(4-(5-bromopyrimidin-2-yl)phenyl) propanoyl) azetidine-3-carboxylate. LCMS-ESI (m/z) calculated for C₂₉H₃₁BrN₄O₅: 594.2. found: 595.8 [M+H]⁺, t_(R)=3.33 min (Method 16). ¹H NMR (400 MHz, DMSO) δ 9.06 (s, 2H), 8.27 (dd, J=8.2, 2.5 Hz, 2H), 7.74 (dd, J=7.9, 5.2 Hz, 1H), 7.41 (t, J=7.7 Hz, 2H), 7.28 (td, J=13.9, 6.9 Hz, 5H), 5.08-4.87 (m, 2H), 4.41-4.11 (m, 3H), 4.06-3.92 (m, 1H), 3.92-3.70 (m, 1.5H), 3.35 (dd, J=14.6, 5.6 Hz, 0.5H), 2.93 (dtd, J=23.1, 13.7, 7.7 Hz, 2H), 1.41 (s, 4H), 1.27 (s, 5H).

tert-butyl 1-((S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl)phenyl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate

Prepared using General Procedure 10. To a stirring solution of (4-((1r,4r)-4-ethylcyclohexyl)phenyl)boronic acid (3.43 g, 4.93 mmol) were added sodium carbonate decahydrate (0.89 g, 14.79 mmol), tert-butyl (S)-1-(2-(((benzyloxy)carbonyl)amino)-3-(4-(5-bromopyrimidin-2-yl)phenyl) propanoyl) azetidine-3-carboxylate (2.93 g, 4.93 mmol), Pd(dppf)Cl₂ (36.0 mg, 0.049 mmol) in dioxane (18 mL) and H₂O (3.0 mL). The reaction mixture was degassed and heated to 80° C., for 2 hours. The reaction mixture was dried under reduced pressure and diluted with DCM (20 mL). The crude material was extracted with aqueous NaHCO₃ (3×20 mL). The combined organics were dried over MgSO₄ and concentrated. The crude product was purified by chromatography (EA/hexane) to afford 2.71 g (78.3%) of tert-butyl 1-((S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl)phenyl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate as a solid. LCMS-ESI (m/z) calculated for C₄₃H₅₀N₄O₅: 702.4. found 703.4 [M+H]⁺, t_(R)=5.72 min (Method 16). ¹H NMR (400 MHz, DMSO) δ 9.20 (d, J=1.2 Hz, 2H), 8.49-8.09 (m, 2H), 7.77 (d, J=7.8 Hz, 3H), 7.41 (t, J=9.2 Hz, 4H), 7.28 (dt, J=13.7, 6.6 Hz, 5H), 5.06-4.91 (m, 2H), 4.39-4.21 (m, 2H), 4.16 (t, J=8.8 Hz, 0.5H), 3.99 (dd, J=15.3, 9.3 Hz, 1H), 3.94-3.81 (m, 1H), 3.81-3.69 (m, 0.5H), 3.09-2.76 (m, 2H), 2.56 (d, J=12.1 Hz, 1H), 1.85 (d, J=10.6 Hz, 4H), 1.49 (dd, J=22.2, 12.5 Hz, 2H), 1.45-1.38 (m, 4H), 1.29 (d, J=5.6 Hz, 5H), 1.27-1.19 (m, 4H), 1.06 (dd, J=21.9, 12.0 Hz, 2H), 0.90 (t, J=7.2 Hz, 3H).

tert-butyl 1-((S)-2-amino-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl)phenyl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate (INT-62)

Prepared using General Procedure 18. Into a solution of 1:1 MeOH/THF (40 mL) were added tert-butyl 1-((S)-2-(((benzyloxy)carbonyl) amino)-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl) phenyl) pyrimidin-2-yl)phenyl) propanoyl) azetidine-3-carboxylate and Pd/C (100.0 mg, 10% Pd). The solution was degassed and stirred under H₂ at room temperature for 18 hours. The solution was filtered through celite and then dried under vacuum to afford 2.1 g (96.3%) of tert-butyl 1-((S)-2-amino-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl)phenyl)pyrimidin-2-yl)phenyl)propanoyl) azetidine-3-carboxylate (INT-62) as a solid product. LCMS-ESI (m/z) calculated for C₃₅H₄₄N₄O₃: 568.3. found: 569.4 [M+H]⁺: t_(R)=4.43 min (Method 16). ¹H NMR (400 MHz, DMSO) δ 9.21 (d, J=2.7 Hz, 2H), 8.44 (d, J=8.2 Hz, 2H), 8.26 (s, 2H), 7.85-7.67 (m, 2H), 7.41 (dd, J=14.2, 5.7 Hz, 4H), 4.30-4.07 (m, 2H), 4.01 (t, J=9.4 Hz, 1H), 3.92 (dd, J=9.8, 6.2 Hz, 0.5H), 3.79 (dd, J=10.0, 6.4 Hz, 0.5H), 3.62 (t, J=9.0 Hz, 0.5H), 3.35 (d, J=6.4 Hz, 1.5H), 3.23-3.11 (m, 1H), 3.07 (s, 1H), 3.01-2.91 (m, 1H), 2.63-2.52 (m, 1H), 1.86 (d, J=10.1 Hz, 4H), 1.49 (dd, J=22.3, 12.4 Hz, 2H), 1.40 (s, 4H), 1.33-1.19 (m, 3H), 1.16 (s, 4H), 1.14-0.99 (m, 2H), 0.90 (t, J=7.2 Hz, 3H). ¹³C NMR (101 MHz, DMSO) δ 170.98, 170.32, 167.33, 167.07, 161.54, 157.46, 155.01, 154.82, 148.23, 137.28, 136.14, 131.24, 130.95, 129.97, 129.82, 127.78, 127.73, 127.64, 126.64, 126.58, 81.04, 80.72, 52.24, 50.06, 49.79, 43.52, 38.33, 36.45, 33.62, 32.54, 32.07, 29.41, 27.53, 27.23, 11.31.

Compounds 1152-1170 and were prepared from tert-butyl 1-((S)-2-amino-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl)phenyl)pyrimidin-2-yl)phenyl)propanoyl) azetidine-3-carboxylate (INT-62) using General Procedures 7 then 8.

tert-butyl ((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(2-fluoro-4-hydroxyphenyl)pyrimidin-2-yl)phenyl)propanoyl)-D-alaninate

Prepared using General Procedure 10. Into a solution of tert-butyl ((S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl) thiophene-2-carboxamido) propanoyl)-D-alaninate (1200 mg, 1.9 mmol) in dioxane (10 mL) and water (3 mL) were added 2-fluoro-4-hydroxyphenyl boronic acid (365 mg, 2.3 mmol), sodium carbonate decahydrate (1100 mg, 3.9 mmol), and PdCl₂(dppf) (280 mg, 0.2 mmol). The mixture was heated at 70° C. for 1.5 hr, then diluted with DCM and washed with H₂O. The resulting crude solution of tert-butyl ((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(2-fluoro-4-hydroxyphenyl)pyrimidin-2-yl)phenyl)propanoyl)-D-alaninate was used crude in the next step. LCMS-ESI (m/z) calculated for C₃₅H₃₉FN₄O₅S: 646.8. found 646.9 [M+H]⁺, t_(R)=3.5 min. (Method 16).

tert-butyl ((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(2-fluoro-4-(((trifluoromethyl)sulfonyl)oxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)-D-alaninate (INT-63)

Prepared using General Procedure 9. Into a solution of crude tert-butyl((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(2-fluoro-4-hydroxyphenyl) pyrimidin-2-yl)phenyl)propanoyl)-D-alaninate (1260 mg, 1.7 mmol) in DCM (10 mL) at 0° C. were added N-phenyl-N-((trifluoromethyl)sulfonyl)methanesulfonamide (775 mg, 2.2 mmol) and DIEA (360 μL, 2.1 mmol). After 6 h, the reaction mixture was diluted with DCM, washed with 10% citric acid, then dried and concentrated. Purification by chromatography (EA/hexanes) provided 1150 mg (89%) of tert-butyl ((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(2-fluoro-4-(((trifluoromethyl)sulfonyl)oxy)phenyl) pyrimidin-2-yl)phenyl) propanoyl)-D-alaninate (INT-63). LCMS-ESI (m/z) calculated for C₃₆H₃₈F₄N₄O₇S₂: 778.8. found 779.8 [M+H]⁺, t_(R)=4.10 min. (Method 16).

Compounds 1171-1175 were prepared from tert-butyl ((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(2-fluoro-4-(((trifluoromethyl)sulfonyl)oxy)phenyl) pyrimidin-2-yl)phenyl) propanoyl)-D-alaninate (INT-63) using General Procedures 10 then 8.

tert-butyl (S)-1-(2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(((trifluoromethyl)sulfonyl)oxy)phenyl)pyrimidin-2- yl)phenyl)propanoyl)azetidine-3-carboxylate (INT-65)

Prepared using General Procedure 9. To a stirring solution of tert-butyl (S)-1-(2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-hydroxyphenyl) pyrimidin-2-yl)phenyl) propanoyl)azetidine-3-carboxylate (INT-48) (1.28 g, 2.0 mmol) and DIEA (0.45 mL, 2.5 mmol) in DCM (8 mL) at 0° C. was added 1,1,1-trifluoro-N-phenyl-N-((trifluoromethyl)sulfonyl) methanesulfonamide (0.89 g, 2.5 mmol). The reaction was stirred at room temperature overnight and quenched with 10 mL saturated sodium bicarbonate. The aqueous layer was extracted with DCM (3×10 mL) and the combined organic layers were dried over magnesium sulfate and concentrated. The crude material was purified by column chromatography (EA/hexanes) to afford 1.4 g (91%) of tert-butyl (S)-1-(2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(((trifluoromethyl)sulfonyl)oxy)phenyl) pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate (INT-65) as a solid. LCMS-ESI (m/z) calculated for C₃₇H₃₉F₃N₄O₇S₂: 772.2. found 772.7 [M+H]⁺, t_(R)=4.08 min (Method 16).

Compounds 1176-1187 were prepared from tert-butyl (S)-1-(2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(((trifluoromethyl)sulfonyl)oxy)phenyl) pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate (INT-65) using General Procedures 10, 18, then 8.

tert-butyl (S)-1-(2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(2-fluoro-4-hydroxyphenyl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate

Prepared using General Procedure 10. Into a solution of tert-butyl (S)-1-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)azetidine-3-carboxylate (INT-38) (600 mg, 0.96 mmol) in dioxane (12 mL) and water (3 mL) were added 2-fluoro-4-hydroxyphenyl boronic acid (180 mg, 1.2 mmol), sodium carbonate decahydrate (550 mg, 1.9 mmol), and PdCl₂(dppf) (140 mg, 0.2 mmol). The mixture was heated at 65° C. for 2 hr, then diluted with DCM and washed with H₂O. The resulting crude solution of tert-butyl (S)-1-(2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(2-fluoro-4-hydroxyphenyl) pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate was used crude in the next step. LCMS-ESI (m/z) calculated for C₃₆H₃₉FN₄O₅S: 658.8. found 659.9 [M+H]⁺, t_(R)=3.49 min. (Method 16).

tert-butyl (S)-1-(2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(2-fluoro-4-(((trifluoromethyl)sulfonyl)oxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate (INT-66)

Prepared using General Procedure 9. Into a solution of crude tert-butyl (S)-1-(2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(2-fluoro-4-hydroxyphenyl) pyrimidin-2-yl)phenyl) propanoyl)azetidine-3-carboxylate (630 mg, 1.0 mmol) in DCM (12 mL) at 0° C. were added N-phenyl-N-((trifluoromethyl)sulfonyl)methanesulfonamide (375 mg, 1.1 mmol) and DIEA (200 μL, 1.1 mmol). After 15 h, the reaction mixture was diluted with DCM, washed with 10% citric acid, then dried and concentrated. Purification by chromatography (EA/hexanes) provided 622 mg (78%) of tert-butyl (S)-1-(2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(2-fluoro-4-(((trifluoromethyl)sulfonyl)oxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate (INT-66). LCMS-ESI (m/z) calculated for C₃H₃₈F₄N₄O₇S₂: 790.9. found 791.8 [M+H]⁺, t_(R)=4.06 min. (Method 16).

Compounds 1188-1225 were prepared from tert-butyl (S)-1-(2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(2-fluoro-4-(((trifluoromethyl)sulfonyl)oxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate (INT-66) using General Procedures 10 then 8.

tert-butyl (S)-1-(2(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4′-butyl-3-fluoro-[1,1′-biphenyl]-4-yl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate

Prepared using General Procedure 10. Into a solution of tert-butyl (S)-1-(2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(2-fluoro-4-(((trifluoromethyl)sulfonyl)oxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate (INT-66) (175 mg, 0.22 mmol) in dioxane (10 mL) and water (3 mL) were added (4-butylphenyl) boronic acid (70 mg, 0.39 mmol), sodium carbonate, decahydrate (130 mg, 0.4 mmol), and PdCl₂(dppf) (32 mg, 0.04 mmol). The mixture was heated at 70° C. for 2 hr, then diluted with DCM, washed with H₂O then purified by chromatography (EA/hexanes) to provide 145 mg (85%) of tert-butyl (S)-1-(2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4′-butyl-3-fluoro-[1,1′-biphenyl]-4-yl)pyrimidin-2-yl)phenyl) propanoyl) azetidine-3-carboxylate. LCMS-ESI (m/z) calculated for C₄₆H₅₁FN₄O₄S: 774.5. found 775.8 [M−H]⁺, t_(R)=5.48 min. (Method 16).

(S)-1-(2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4′-butyl-3-fluoro-[1,1′-biphenyl]-4-yl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylic acid (Compound 1226)

Prepared using General Procedure 8. A solution of tert-butyl (S)-1-(2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4′-butyl-3-fluoro-[1,1′-biphenyl]-4-yl) pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate (145 mg, 0.19 mmol) was dissolved in a 50% solution of TFA/DCM (10 mL) for 2 hours. The volatile solvents were removed in vacuo and the resulting crude material was dissolved in DCM (10 mL) and concentrated three times. The resulting material was purified by preparative HPLC to provide 120 mg (88%) of (S)-1-(2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4′-butyl-3-fluoro-[1,1′-biphenyl]-4-yl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylic acid. LCMS-ESI (m/z) calculated for C₄₂H₄₃FN₄O₄S: 718.9. found 719.8 [M+H]⁺, t_(R)=9.33 min (Method 14). ¹H NMR (400 MHz, DMSO) δ 9.14 (s, 2H), 8.75 (d, J=8.1 Hz, 1H), 8.35 (dd, J=7.5, 4.7 Hz, 2H), 7.83 (t, J=8.2 Hz, 1H), 7.72 (m, 5H), 7.48 (d, J=8.1 Hz, 2H), 7.33 (d, J=7.8 Hz, 2H), 6.93 (d, J=3.7 Hz, 1H), 4.67 (m, 1H), 4.43 (t, J=8.7 Hz, 1H), 4.36-4.25 (m, 1H), 4.18 (m, 1H), 4.11-3.95 (m, 1H), 3.97-3.80 (m, 1H), 3.51-3.38 (m, 0.5H), 3.39-3.26 (m, 0.5H), 3.10 (ddd, J=29.0, 18.4, 9.9 Hz, 2H), 2.64 (t, J=7.6 Hz, 2H), 1.67-1.52 (m, 2H), 1.43-1.24 (m, 11H), 0.92 (t, J=7.3 Hz, 3H).

(S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-((4-methylpentyl)oxy)phenyl)-pyrimidin-2-yl)phenyl)propanoic acid

Prepared using General Procedures 10 and 8: To a stirred mixture of (S)-tert-butyl 2-(((benzyloxy)carbonyl)amino)-3-(4-(5-bromopyrimidin-2-yl)phenyl)propanoate (INT-7) (20.17 g, 39.4 mmol) and (4-((4-methylpentyl)oxy)phenyl)boronic acid (13.11 g, 59.0 mmol) in dioxane (200 mL) was added NaHCO₃ (87 mL of a 0.9 M aqueous solution, 79 mmol). The mixture was warmed to 40° C., de-gassed then treated with PdCl₂dppf (0.720 g, 0.984 mmol) and heated under reflux. After 3 h, the mixture was allowed to cool then diluted with EA (400 mL) and washed successively with water (2×300 mL) and brine (50 mL). The combined organic extracts were dried over MgSO₄ and solvents evaporated. The residue was purified by column chromatography (iso-hexanes/EA) to give intermediate ester as a white, waxy solid. This was taken into DCM (200 mL) and stirred with TFA (20 mL) After 16 h, additional TFA (20 mL) was charged. After a further 24 h, the mixture was diluted with toluene (200 mL) and solvents evaporated. The residue was re-slurried from iso-hexanes to afford 20.82 g (96%) of (S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-((4-methylpentyl) oxy)phenyl)pyrimidin-2-yl)phenyl)propanoic acid. LCMS-ESI (m/z) calculated for C₃₃H₃₅N₃O₅: 553.3. found 554.1 [M+H]⁺, t_(R)=3.43 min (Method 6).

methyl (S)-1-(2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-((4-methylpentyl)oxy)-phenyl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate

Prepared using General Procedure 7: To a stirred solution of (S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-((4-methylpentyl)oxy)phenyl)pyrimidin-2-yl) phenyl)propanoic acid (15 g, 27.1 mmol) and methyl azetidine-3-carboxylate hydrochloride (12.32 g, 81 mmol) in DMF (250 mL), at −5° C., was added DIEA (25 mL, 135 mmol). After 5 min, HATU (14.63 g, 38.5 mmol) was added in small portions to maintain the internal temperature between 0 and −5° C. After 1 h, further DIEA (25 mL, 135 mmol) and amine (1 eq) were charged. After 5 min, further HATU (11.33 g, 29.8 mmol) was added in small portions. After 1 h the mixture was treated with water (20 mL) and stirred for 15 min. Further water was slowly added (˜80 mL) and the mixture stirred at 5° C. for 30 min. The precipitate was collected by filtration, washing with water (2×50 mL) and drying in the vacuum oven to afford 13.38 g (76%) of methyl (S)-1-(2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-((4-methylpentyl)oxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate. LCMS-ESI (m/z) calculated for C₃₈H₄₂N₄O₆: 650.3. found 651.3 [M+H]⁺, t_(R)=9.46 min (Method 10).

methyl (S)-1-(2-amino-3-(4-(5-(4-((4-methylpentyl)oxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate acetate

Prepared using General Procedure 18: A stirred mixture of (S)-methyl 1-(2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-((4-methylpentyl)oxy)phenyl)pyrimidin-2-yl) phenyl)propanoyl)azetidine-3-carboxylate (13.38 g, 20.56 mmol) and 10% Pd/C (Johnson and Matthey Type 39 paste, 1.4 g) in THF (150 mL) and acetic acid (1.8 mL, 30.8 mmol) was hydrogenated under 3 bar. After 16 h, MeOH (100 mL) was added to effect dissolution and the mixture further hydrogenated under 3 bar. After a further 3 h, the mixture was filtered through Celite and solvents evaporated. The residue was re-slurried from EA (100 mL) to give 10.3 g (87%) of methyl (S)-1-(2-amino-3-(4-(5-(4-((4-methylpentyl)oxy)phenyl) pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate acetate. LCMS-ESI (m/z) calculated for C₃₀H₃₆N₄O₄: 516.3. found 517.2 [M+H]⁺, t_(R)=2.75 min (Method 11).

(S)-1-(2-amino-3-(4-(5-(4-((4-methylpentyl)oxy)phenyl)pyrimidin-2-yl)phenyl)-propanoyl)azetidine-3-carboxylic acid hydrochloride (INT-70)

A stirred suspension of (S)-methyl 1-(2-amino-3-(4-(5-(4-((4-methylpentyl)oxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate acetate (4.5 g, 7.80 mmol) in dioxane (35 mL) and water (18 mL) was treated with hydrogen chloride (23.4 mL of a 10 M aqueous solution, 234 mmol). After 1 h, further dioxane (20 mL) was added. After 24 h, the mixture was diluted with water (50 mL) and brine (50 mL) and exhaustively extracted with EA. The solvents were evaporated and the residue further evaporated with toluene and dried in the vacuum oven to afford 3.6 g (86%) of (S)-1-(2-amino-3-(4-(5-(4-((4-methylpentyl)oxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylic acid hydrochloride (INT-70). LCMS-ESI (m/z) calculated for C₂₉H₃₄N₄O₄: 502.3. found 503.3 [M+H]⁺, t_(R)=5.32 min (Method 10).

Compounds 1227-1246 were prepared from (S)-1-(2-amino-3-(4-(5-(4-((4-methylpentyl)oxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylic acid hydrochloride (INT-70) using General Procedure 3.

methyl (S)-1-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)azetidine-3-carboxylate

Prepared using General Procedure 7: To a stirred solution of (S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoic acid (3.85 g, 7.90 mmol) in DMF (50 mL), treated with methyl azetidine-3-carboxylate hydrochloride (3.59 g, 23.69 mmol) and cooled to −5° C. whereupon DIEA (8.75 mL, 47.4 mmol) was added. When a clear solution was observed, HATU (7.51 g, 19.74 mmol) was added portionwise, to maintain internal temperature between 0 and −5° C. After 15 min, further HATU (0.75 g, 1.97 mmol) was charged. After a further 30 min the mixture was quenched with water (2 mL) and allowed to warm to room temperature. The mixture was diluted with water (˜30 mL) and acidified with AcOH. The precipitate was collected by filtration, washing successively with water (3×30 mL) then ACN (2×5 mL) to afford 4.25 g (92%) of methyl (S)-1-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido) propanoyl) azetidine-3-carboxylate. LCMS-ESI (m/z) calculated for C₂₇H₂₉BrN₄O₄S: 584.1. found 585.0 [M+H]⁺, t_(R)=2.55 min (Method 11).

(S)-1-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)azetidine-3-carboxylic acid (INT-71)

To a stirred mixture of water (140 mL) and AcOH (140 mL) was added sulfuric acid (53.2 mL, 993 mmol) and the mixture allowed to cool to room temperature. This was then added to a stirred solution of (S)-methyl 1-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido) propanoyl) azetidine-3-carboxylate (19.39 g, 33.1 mmol) in dioxane (225 mL). After 20 h, the mixture was diluted with ice water (500 mL) and extracted with DCM (2×350 mL). The combined organic extracts were washed with water (2×500 mL) dried over MgSO₄ and solvents evaporated. Column chromatography (DCM/EA/AcOH) gave 12.96 g (69%) of (S)-1-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)azetidine-3-carboxylic acid (INT-71). LCMS-ESI (m/z) calculated for C₂₆H₂₇BrN₄O₄S: 570.1. found 571.0 [M+H]⁺, t_(R)=2.36 min (Method 11).

(S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido) propanoyl)-D-alanine (INT-72

Prepared using General Procedure 8: To a stirred solution of (R)-tert-butyl 2-((S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl) thiophene-2-carboxamido) propanamido)propanoate (4.8 g, 7.80 mmol) in DCM (150 mL) was added TFA (18 mL). After 16 h, the reaction was diluted with toluene (100 mL) and solvents evaporated to afford 4.36 g (100%) of ((S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)-D-alanine (INT-72). LCMS-ESI (m/z) calculated for C₂₅H₂₇BrN₄O₄S: 558.1; no m/z observed, t_(R)=2.43 min (Method 11).

Compounds 1247-1265 were prepared from ((S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)-D-alanine (INT-72) using General Procedure 10.

(E)-2-(2(4-ethylphenyl)prop-1-en-1-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (INT-68)

An oven-dried flask was charged with xantphos (222 mg, 0.38 mmol), copper (I) chloride (38 mg, 0.38 mmol) and 4,4,4′,4′,5,5,5′,5′-octamethyl-2,2′-bi(1,3,2-dioxaborolane) (1073 mg, 4.22 mmol) then blanketed under nitrogen. THF (38 mL) was added and the mixture stirred for 5 min. A solution of sodium tert-butoxide (2.1 mL of a 2 M solution in THF, 4.2 mmol) was added dropwise and the mixture stirred a further 5 min. Ethyl-4-ethynylbenzene (538 μL, 3.84 mmol) and iodomethane (956 μL, 15.36 mmol) were charged and the flask sealed up with parafilm. The mixture was allowed to stir for 16 h then diluted with Et₂O (100 mL) and washed with water (3×75 mL). The organic layer was dried over Na₂SO₄ and solvents evaporated to afford 0.2 g (19%) of (E)-2-(2-(4-ethylphenyl)prop-1-en-1-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (INT-68). LCMS-ESI (m/z) calculated for C₁₇H₂₅BO₂: 272.2; no m/z observed, t_(R)=9.17 min (Method 10). ¹H NMR (400 MHz, DMSO-d6) δ 7.34-7.29 (m, 2H), 7.09-7.06 (m, 2H), 5.51 (q, J=0.9 Hz, 1H), 2.48 (q, J=7.6 Hz, 2H), 2.21 (d, J=0.9 Hz, 3H), 1.13 (s, 12H), 1.06 (t, J=7.6 Hz, 3H).

Compound 1266 was prepared from ((S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)-D-alanine (INT-72) and (E)-2-(2-(4-ethylphenyl)prop-1-en-1-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (INT-68) using General Procedure 10.

Compounds 1267 and 1268 were prepared from ((S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)-D-alanine (INT-72) using General Procedure 11.

Compounds 1269 and 1270 were prepared from tert-butyl (R)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-bromopyrimidin-2-yl)phenyl)propanoate using General Procedures 10, 18, 7, 8, 7 and 8 sequentially.

Compound 1271 was prepared from tert-butyl (R)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-bromopyrimidin-2-yl)phenyl)propanoate using General Procedures 10, 8, 7, 18, 7 and 4 sequentially.

Compound 1272 was prepared from tert-butyl ((S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)-D-alaninate using General Procedure 36.

Compound 1273 was prepared from tert-butyl ((S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)-D-alaninate using General Procedures 11 and 8.

Compound 1274 was prepared from tert-butyl ((S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)-D-alaninate using General Procedures 10, 8 and 18 sequentially.

Compound 1275 was prepared from tert-butyl ((S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)-D-alaninate using General Procedures 21 and 8 sequentially.

Compound 1276 was prepared from tert-butyl ((S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)-D-alaninate using General Procedures 21 and 8.

Compound 1277 was prepared from tert-butyl ((S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)-D-alaninate using General Procedures 21, 8, and 18 sequentially.

Compounds 1278 and 1279 were prepared from methyl 1-((S)-2-amino-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl)phenyl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate using General Procedures 3 and 4 sequentially.

Compound 1280 was prepared from (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl) propanoic acid (Compound 192) using General Procedures 7, 8, and 8.

Compound 1281 was prepared from (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(heptyloxy)phenyl)pyrimidin-2-yl)phenyl) propanoic acid (Compound 192) using General Procedures 7 then 8.

Compounds 1282-1320 were prepared from tert-butyl ((S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-buty)thiophene-2-carboxamido) propanoyl)-D-alaninate using General Procedures 10 then 8.

Compounds 1321 and 1322 were prepared from (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl)phenyl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 1058) using General Procedures 7 then 4.

Compounds 1323-1328 were prepared from (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl)phenyl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 1058) using General Procedures 7 then 8.

Compounds 1329-1332 were prepared from tert-butyl (S)-1-(2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(2-fluoro-4-(((trifluoromethyl)sulfonyl)oxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate (INT-66) using General Procedures 10 then 8.

Compound 1333 was prepared from 5-bromo-2-chloropyridine and (4-((1r,4r)-4-ethylcyclohexyl)phenyl)boronic acid using General Procedure 10 and then (S)-tert-butyl 2-(((benzyloxy)carbonyl)amino)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propanoate (INT-6) using General Procedures 10, 18, 7 and 8 sequentially.

Compound 1334 was prepared from (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl)phenyl)pyridin-2-yl)phenyl)propanoic acid (Compound 1333) using General Procedures 7 and 4 sequentially.

Compound 1335 was prepared from 2-bromo-5-chloropyridine and (4-((1r,4r)-4-ethylcyclohexyl)phenyl)boronic acid using General Procedure 10 and then (S)-tert-butyl 2-(((benzyloxy)carbonyl)amino)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propanoate (INT-6) using General Procedures 10, 18, 7 and 8 sequentially.

1-(4-(1r,4r)-4-ethylcyclohexyl)phenyl)ethan-1-one

To a stirred solution of 1-bromo-4-((1r,4r)-4-ethylcyclohexyl)benzene (2.243 g, 8.39 mmol) in THF (20 mL) at −78° C. was added butyllithium (3.69 mL of a 2.5 M solution in hexanes, 9.23 mmol). After 40 min, 1-morpholinoethanone (1.0 mL, 9.23 mmol) was added dropwise. After 1 h the mixture was warmed to 0° C. After a further 1 h, the mixture was quenched into NH₄Cl (50 mL) and extracted with diethyl ether (3×30 mL). The combined organic extracts were dried over MgSO₄ and solvents evaporated. The residue was stirred in iso-hexanes (10 mL) and filtered and the liquors evaporated. The resulting residue was purified by column chromatography (iso-hexanes/diethyl ether) to afford 687 mg (36%) of 1-(4-((1 r,4r)-4-ethylcyclohexyl)phenyl)ethan-1-one. LCMS-ESI (m/z) calculated for C₁₆H₂₂O: 230.2; no m/z observed, t_(R)=2.59 min (Method 6).

2-bromo-1-(4-((1r,4r)-4-ethylcyclohexyl)phenyl)ethan-1-one

A stirred solution of 1-(4-((1r,4r)-4-ethylcyclohexyl)phenyl)ethan-1-one (685 mg, 2.97 mmol) in DCM (40 mL) was treated with trimethylphenylammonium tribromide (1230 mg, 3.27 mmol). After 16 h, the mixture was washed with NaHCO₃ (50 mL), dried over Na₂SO₄ and solvents evaporated to afford 920 mg (100%) of 2-bromo-1-(4-((1r,4r)-4-ethylcyclohexyl)phenyl)ethan-1-one. LCMS-ESI (m/z) calculated for C₁₆H₂₁BrO: 308.1. found 309.1 [M+H]⁺, t_(R)=9.01 min (Method 10).

3(4-bromophenyl)-6-(4-((1s,4s)-4-ethylcyclohexyl)phenyl)-1,2,4-triazine

To a stirred solution of 2-bromo-1-(4-((1r,4r)-4-ethylcyclohexyl)phenyl)ethan-1-one (417 mg, 1.35 mmol) and 4-bromobenzohydrazide (580 mg, 2.7 mmol) in EtOH (7 mL) and AcOH (3 mL) was added potassium acetate (159 mg, 1.62 mmol) and the resulting mixture heated under reflux. After 4 h, the mixture was allowed to cool then diluted with THF (50 mL) and silica (2 g) and solvents evaporated. Column chromatography (EA/DCM) gave a solid that was re-slurried from MeOH to afford 240 mg (42%) of 3-(4-bromophenyl)-6-(4-((1r,4r)-4-ethylcyclohexyl)phenyl)-1,2,4-triazine as bright yellow needles. LCMS-ESI (m/z) calculated for C₂₃H₂₄BrN₃: 421.1. found 422.1 [M+H]⁺, t_(R)=11.88 min (Method 10).

Compound 1336 was prepared from 3-(4-bromophenyl)-6-(4-((1r,4r)-4-ethylcyclohexyl)phenyl)-1,2,4-triazine and (R)-methyl 2-((tert-butoxycarbonyl)amino)-3-iodopropanoate using General Procedures 31, 8, 7 and 4 sequentially.

Compound 1337 was prepared from (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(6-(4-((1r,4r)-4-ethylcyclohexyl)phenyl)-1,2,4-triazin-3-yl)phenyl)propanoic acid (Compound 1336) using General Procedures 7 and 4 sequentially.

Compound 1338 was prepared from ((S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)-D-alanine (INT-72) using General Procedure 37.

Compound 1339 was prepared from methyl 1-((S)-2-amino-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl)phenyl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate and 5-(2-cyanopropan-2-yl)thiophene-2-carboxylic acid using General Procedures 7 and 4 sequentially.

1-(thiophen-2-yl)cyclopropanecarbonitrile

To a stirring solution of 2-(thiophen-2-yl)acetonitrile (1.1 mL, 10 mmol) in DMSO (40 mL) was added sodium hydride (1 g of a 60% dispersion in mineral oil, 25.00 mmol). After 30 min, 1,2-dibromoethane (1.7 mL, 20.00 mmol) was added dropwise, and the mixture was stirred for 2 h. The reaction was quenched by the addition of water (100 mL) and extracted with diethyl ether (3×100 mL). The combined organic extracts were dried over MgSO₄ and solvents evaporated. Column chromatography (EA/iso-hexanes) gave 0.8 g (54%) of 1-(thiophen-2-yl)cyclopropanecarbonitrile. LCMS-ESI (m/z) calculated for C₈H₇NS: 149.0. found 150.3 [M+H]⁺, t_(R)=1.88 min (Method 11).

1-(5-formylthiophen-2-yl)cyclopropanecarbonitrile

To a stirring solution of 1-(thiophen-2-yl)cyclopropanecarbonitrile (800 mg, 5.36 mmol) in THF (30 mL) at −78° C. was added butyllithium (2.7 mL of a 2.5 M solution in hexanes, 6.70 mmol). After 1 h, DMF (1.6 mL, 21.45 mmol) was added. The reaction mixture was stirred for 6 h at −78° C. and then quenched by the addition of saturated aqueous NH₄Cl (25 mL). The mixture was extracted with EA (3×25 mL) and the combined organic extracts washed with brine (20 mL), dried over MgSO₄ and solvents evaporated. Column chromatography (EA/iso-hexanes) gave 111 mg (12%) of 1-(5-formylthiophen-2-yl)cyclopropanecarbonitrile. LCMS-ESI (m/z) calculated for C₉H₇NOS: 177.0. found 178.3 [M+H]⁺, t_(R)=1.52 min (Method 10).

5-(1-cyanocyclopropyl)thiophene-2-carboxylic acid

To a stirring solution of 1-(5-formylthiophen-2-yl)cyclopropanecarbonitrile (200 mg, 1.13 mmol) and 2,3-dimethylbut-2-ene (6.77 mL, 6.77 mmol) in tert-butanol (3 mL) was added a solution of NaClO₂ (765 mg, 6.77 mmol) and NaH₂PO₄ (812 mg, 6.77 mmol) in water (12 mL) After 30 min, the volatiles were evaporated and the residue treated with 1 M HCl (50 mL) then extracted with EA (3×25 mL). The combined organic extracts were washed with brine (50 mL), dried over MgSO₄, and sovents evaporated to afford 180 mg (83%) of 5-(1-cyanocyclopropyl)thiophene-2-carboxylic acid. LCMS-ESI (m/z) calculated for C₉H₇NOS: 193.0. found 194.1 [M+H]⁺, t_(R)=1.37 min (Method 11).

Compound 1340 was prepared from methyl 1-((S)-2-amino-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl)phenyl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate and 5-(1-cyanocyclopropyl)thiophene-2-carboxylic acid using General Procedures 7 and 4 sequentially.

Compound 1341 was prepared from (4-((1r,4r)-4-ethylcyclohexyl) phenyl)boronic acid and 5-bromo-2-iodopyridine using General Procedure 10 and then using (S)-tert-butyl 2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propanoate tert-butyl (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propanoate (INT-16) and General Procedures 10, 8, 7 and 4 sequentially.

Compound 1342 was prepared from tert-butyl 1-((S)-2-amino-3-(4-(5-(4-((1r,4r)-4-ethylcyclohexyl)phenyl)pyrimidin-2-yl)phenyl)propanoyl) azetidine-3-carboxylate (INT-62) using General Procedures 7 then 8.

1-((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-((1s,4r)-4-propylcyclohexyl)phenyl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylic acid (Compound 1343)

Prepared using General Procedure 10: To a stirring solution of sodium bicarbonate (1.764 g, 21.00 mmol) in water, was added a solution of (4-((1s,4r)-4-propylcyclohexyl)phenyl)boronic acid (2.240 g, 9.10 mmol) and (S)-1-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl) azetidine-3-carboxylic acid (INT-71) (4 g, 7.00 mmol) in dioxane (100 mL). The mixture was warmed to 40° C., de-gassed, then treated with PdCl₂dppf (0.256 g, 0.350 mmol). The reaction was heated under reflux. After 2 h, the mixture was allowed to cool, treated with 1 M HCl (300 mL) and extracted with EA (2×300 mL). The combined organic extracts were dried over MgSO₄ and solvents evaporated. Column chromatography (AcOH/EA/iso-hexanes) gave 2.93 g (60%) of 1-((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-((1s,4r)-4-propylcyclohexyl)phenyl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylic acid. LCMS-ESI (m/z) calculated for C₄₁H₄₈N₄₀S: 692.3: no m/z observed, t_(R)=11.04 min (Method 10). Chiral analysis (Chiral Method 1) showed >95% single peak. ¹H NMR (400 MHz, DMSO-d₆) δ 12.73 (s, 1H), 9.18 (d, J=1.9 Hz, 2H), 8.75 (dd, J=8.2, 2.6 Hz, 1H), 8.49-8.19 (m, 2H), 7.80-7.73 (m, 2H), 7.70 (d, J=3.9 Hz, 1H), 7.51-7.43 (m, 2H), 7.43-7.36 (m, 2H), 6.93 (dd, J=3.9, 1.4 Hz, 1H), 4.70-4.64 (m, 1H), 4.43 (t, J=8.0 Hz, 0.5H), 4.32-4.28 (m, 0.5H), 4.26-4.12 (m, 1H), 4.08-3.99 (m, 1H), 3.93-3.86 (m, 1H), 3.47-3.40 (m, 0.5H), 3.37-3.29 (m, 0.5H), 3.19-2.95 (m, 2H), 2.57-2.51 (m, 1H), 1.84 (d, J=11.6 Hz, 4H), 1.58-1.41 (m, 2H), 1.39-1.30 (m, 12H), 1.29-1.15 (m, 2H), 1.10-1.02 (m, 2H), 0.89 (t, J=7.2 Hz, 3H).

Compounds 1344-1354 were prepared from tert-butyl (S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoate (INT-17) using General Procedures 10 then 8.

(S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4′-(trifluoromethyl)-[1,1′-biphenyl]-4-yl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 1355)

Prepared using General Procedure 10: To a stirring solution of NaHCO₃ (2.52 g, 30.0 mmol) in water (40 mL), was added a solution of (4′-(trifluoromethyl)[1,1′-biphenyl]-4-yl)boronic acid (3.46 g, 12.99 mmol) and (S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoic acid (4.88 g, 9.99 mmol) in dioxane (100 mL). The mixture was warmed to 40° C., de-gassed, and treated with PdCl₂dppf (0.366 g, 0.500 mmol). The mixture was heated under reflux for 3 h whereupon further PdCl₂dppf (0.183 g, 0.25 mmol) and (4′-(trifluoromethyl)-[1,1′biphenyl]-4-yl)boronic acid (1.73 g, 6 mmol) were added. After a further 3 h, the mixture was allowed to cool, treated with 1 M HCl (100 mL) and extracted with EA (2×200 mL) then DCM (200 mL). The combined organic extracts were dried over MgSO₄ and solvents evaporated. Column chromatography (AcOH/EA/DCM/iso-hexanes) followed by re-slurry from ACN (200 mL) gave 3.555 (57%) of (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4′-(trifluoromethyl)-[1,1′-biphenyl]-4-yl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 1355). LCMS-ESI (m/z) calculated for C₃₅H₃₀F₃N₃O₃S: 629.2; no m/z observed, t_(R)=9.69 min (Method 10). Chiral analysis (Chiral Method 1) showed >95% single peak. ¹H NMR (400 MHz, DMSO-d₆) δ 12.85 (s, 1H), 9.30 (s, 2H), 8.67 (d, J=8.3 Hz, 1H), 8.44-8.32 (m, 2H), 8.10-7.97 (m, 4H), 7.97-7.91 (m, 2H), 7.86 (d, J=8.2 Hz, 2H), 7.65 (d, J=3.8 Hz, 1H), 7.54-7.43 (m, 2H), 6.93 (d, J=3.9 Hz, 1H), 4.66 (ddd, J=10.5, 8.3, 4.5 Hz, 1H), 3.28 (dd, J=13.9, 4.5 Hz, 1H), 3.14 (dd, J=13.9, 10.5 Hz, 1H), 1.33 (s, 9H).

(S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4′-(trifluoromethoxy)-[1,1′-biphenyl]-4-yl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 1356)

Prepared using General Procedure 10: To a stirring solution of (S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoic acid (5.4 g, 11.06 mmol) and (4′-(trifluoromethoxy)-[1,1′-biphenyl]-4-yl)boronic acid (3.20 g, 11.35 mmol) in 1,4-dioxane (150 mL) was added NaHCO₃ (36.9 mL of a 0.9 M aqueous solution, 33.2 mmol). The mixture was heated to 40° C. and degassed, then treated with PdCl₂dppf (0.243 g, 0.332 mmol). The reaction was heated under reflux for 5 h whereupon further PdCl₂dppf (0.243 g, 0.332 mmol) and (4′-(trifluoromethoxy)-[1,1′-biphenyl]-4-yl)boronic acid (1.80 g, 6.38 mmol) were charged. After a further 1 h, the mixture was allowed to cool then quenched into 1 M HCl (75 mL) and extracted with EA (2×200 mL). The combined organics were evaporated and the residue purified by column chromatography (AcOH/EA/DCM/iso-hexanes) and re-slurry from ACN (125 mL) to afford 3.6 g (50%) of (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4′-(trifluoromethoxy)-[1,1′-biphenyl]-4-yl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 1356). LCMS-ESI (m/z) calculated for C₃₅H₃₀F₃N₃O₄S: 645.2. found 646.2 [M+H]⁺, t_(R)=9.88 min (Method 10). Chiral analysis (Chiral Method 1) showed >95% single peak. ¹H NMR (400 MHz, DMSO-d₆) δ 12.85 (s, 1H), 9.29 (s, 2H), 8.66 (d, J=8.3 Hz, 1H), 8.44-8.29 (m, 2H), 8.04-7.96 (m, 2H), 7.93-7.83 (m, 4H), 7.65 (d, J=3.9 Hz, 1H), 7.55-7.44 (m, 4H), 6.93 (d, J=3.9 Hz, 1H), 4.66 (ddd, J=10.5, 8.3, 4.5 Hz, 1H), 3.28 (dd, J=13.9, 4.5 Hz, 1H), 3.14 (dd, J=13.9, 10.6 Hz, 1H), 1.32 (s, 9H).

Compounds 1357, 1358, and 1393 were prepared from tert-butyl (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-hydroxyphenyl) pyrimidin-2-yl)phenyl) propanoate using General Procedures 9, 10 and 8 sequentially.

tert-butyl (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(2-fluoro-4-hydroxyphenyl)pyrimidin-2-yl)phenyl)propanoate

Prepared using General Procedure 10: To a stirring solution of tert-butyl (S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoate (INT-17) (0.75 g, 1.4 mmol) and (2-fluoro-4-hydroxyphenyl) boronic acid (0.26 g, 1.65 mmol) in 4:1 dioxane: H₂O (12 mL) was added sodium carbonate, decahydrate (0.80 g, 2.8 mmol). The reaction mixture was degassed with nitrogen bubbling and then PdCl₂(dppf) (0.14 g, 0.2 mmol) was added and the reaction mixture was heated for 1 h at 65° C. The mixture was cooled, diluted with DCM and washed with 10% citric acid. The organic extract was dried over Na₂SO₄ and concentrated to afford 0.79 g (˜100%) of crude tert-butyl (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(2-fluoro-4-hydroxyphenyl)pyrimidin-2-yl)phenyl)propanoate. LCMS-ESI (m/z) calculated for C₃₂H₃₄FN₃O₄S: 575.7. found 576.2 [M+Na]⁺, t_(R)=3.6 min (Method 25).

tert-butyl (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(2-fluoro-4-(((trifluoromethyl)sulfonyl)oxy)phenyl)pyrimidin-2-yl)phenyl)propanoate (INT-76)

Prepared using General Procedure 9: To a stirring solution of crude tert-butyl (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(2-fluoro-4-hydroxyphenyl)pyrimidin-2-yl) phenyl)propanoate (0.79 g, 1.4 mmol) and DIEA (0.29 mL, 1.5 mmol) in DCM (10 mL) at 0° C. was added 1,1-trifluoro-N-phenyl-N-((trifluoromethyl)sulfonyl)methanesulfonamide (0.54 g, 1.6 mmol). The reaction mixture was allowed to warm to room temperature and stirred overnight. The reaction mixture was diluted with DCM (200 mL) and washed with 10% citric acid (3×200 mL). The combined organic extracts were dried over Na₂SO₄, concentrated and purified by column chromatography (EA/hexane) to afford 0.75 g (76%) tert-butyl (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(2-fluoro-4-(((trifluoromethyl)sulfonyl)oxy) phenyl)pyrimidin-2-yl)phenyl)propanoate (INT-76). LCMS-ESI (m/z) calculated for C₃₃H₃₃F₄N₃O₆S₂: 707.2. found 652.1 [M−tBu]⁺, t_(R)=4.5 min (Method 25).

Compounds 1359-1365 were prepared from tert-butyl (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(2-fluoro-4-(((trifluoromethyl)sulfonyl)oxy) phenyl)pyrimidin-2-yl)phenyl)propanoate (INT-76) using General Procedures 10 then 8.

tert-butyl (S)-1-(2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(3-fluoro-4′-propyl-[1,1′-biphenyl]-4-yl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate

Prepared using General Procedure 10: To a stirring solution of tert-butyl (S)-1-(2-(((benzyloxy)carbonyl)amino)-3-(4-(5-bromopyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate (300 mg, 0.5 mmol) and 2-(3-fluoro-4′-propyl-[1,1′-biphenyl]-4-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (206 mg, 0.61 mmol) in 3:1 dioxanes: H₂O (10 mL) was added sodium carbonate, decahydrate (290 mg, 1.01 mmol). The mixture was degassed using nitrogen bubbling and then PdCl₂(dppf) (74 mg, 0.1 mmol) was added and the mixture was heated at 65° C. After 18 h, the reaction mixture was diluted with DCM and washed with brine. The organic layer was dried (Na₂SO₄) and purified by column chromatography (EA/hex) to provide 270 mg (74%) of tert-butyl (S)-1-(2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(3-fluoro-4′-propyl-[1,1′-biphenyl]-4-yl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate LCMS-ESI (m/z) calculated for C₄₃H₅₄N₄O₅: 706.9. found 707.4 [M+H]⁺, t_(R)=5.3 min (Method 25).

tert-butyl (S)-1-(2-amino-3-(4-(5-(3fluoro-4′-propyl-[1,1′-biphenyl]-4-yl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate (INT-77)

Prepared using General Procedure 18: To a stirring solution of tert-butyl (S)-1-(2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(3-fluoro-4′-propyl-[1,1′-biphenyl]-4-yl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate (80 mg, 0.11 mmol) in EA (4 mL) was added Pd/C (19 mg, 0.02 mmol) and the reaction was flushed with hydrogen three times. The reaction mixture was stirred under an atmosphere of hydrogen for 24 hours, the mixture was filtered through Celite, and concentrated to give 90 mg (138%) of tert-butyl (S)-1-(2-(((benzyloxy)carbonyl)amino)-3-(4-(5-bromopyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate (INT-77), contaminated with residual Pd/C. LCMS-ESI (m/z) calculated for C₃₆H₃₉FN₄O₃: 594.7 found 595.3 [M+H]⁺, t_(R)=3.8 min (Method 25).

Compounds 1366-1391 were prepared from tert-butyl (S)-2-amino-3-(4-(5-(4-((1s,4s)-4-ethylcyclohexyl)phenyl)pyrimidin-2-yl)phenyl)propanoate (INT-78) using General Procedures 7 then 8.

Compound 1392 was prepared from (R)-tert-butyl 3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoate (R)-INT-17 using General Procedures 10 and 8 sequentially.

Compounds 1394 and 1395 were prepared from tert-butyl (S)-1-(2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(((trifluoromethyl)sulfonyl)oxy)phenyl) pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate (INT-65) using General Procedures 10 then 8.

Compound 1396 was prepared from tert-butyl (S)-1-(2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(2-fluoro-4-(((trifluoromethyl)sulfonyl)oxy) phenyl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate tert-butyl (S)-1-(2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(2-fluoro-4-(((trifluoromethyl) sulfonyl)oxy)phenyl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate (INT-66) using General Procedures 10 and 8 sequentially.

Compounds 1397-1410 were prepared from tert-butyl (S)-1-(2-(((benzyloxy)carbonyl)amino)-3-(4-(5-bromopyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate (INT-77) using General Procedures 7 then 8.

4-(4-propylcyclohexyl)piperazin-2-one was prepared from 4-propylcyclohexanone and piperazin-2-one using General Procedure 15.

Compounds 1411 and 1420 were prepared from 4-(4-propylcyclohexyl) piperazin-2-one and (rac)-1-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)azetidine-3-carboxylic acid (racemic-INT-71) using General Procedure 11.

1-benzyl-4-(4-butylphenyl)piperidin-4-ol

To a stirring solution of 1-bromo-4-butylbenzene (3.72 g, 17.44 mmol) in THF (50 mL) at −78° C. was added butyllithium (7.61 mL of a 2.5 M solution in hexanes, 19.02 mmol). After 1 h, 1-benzylpiperidin-4-one (2.94 mL, 15.85 mmol) was added. The reaction was stirred at −78° C. for 1 h, then warmed to room temperature and stirred for a further 1 h. The reaction was quenched with ammonium chloride (30 mL of a saturated aqueous solution) and extracted with EA (3×30 mL). The combined organic extracts were washed with brine (30 mL), dried over MgSO₄ and solvents evaporated to afford 3.5 g (68%) of 1-benzyl-4-(4-butylphenyl)piperidin-4-ol. LCMS-ESI (m/z) calculated for C₂₂H₂₉NO: 323.2. found 324.3 [M+H]⁺, t_(R)=1.51 min (Method 11).

1-benzyl-4-(4-butylphenyl)-1,2,3,6-tetrahydropyridine

Prepared using General Procedure 39: To a stirring solution of 1-benzyl-4-(4-butylphenyl)piperidin-4-ol (3.5 g, 10.82 mmol) in DCM (15 mL) was added TFA (15 mL). After 3.5 h, solvents were evaporated and the residue taken into EA (50 mL) and washed with NaHCO₃ (50 mL). The aqueous was further extracted with EA (50 mL) and the combined organic extracts dried over MgSO₄ and solvents evaporated to afford 3.3 g (100%) of 1-benzyl-4-(4-butylphenyl)-1,2,3,6-tetrahydropyridine. LCMS-ESI (m/z) calculated for C₂₂H₂₇N: 305.2. found 306.2 [M+H]⁺, t_(R)=1.65 min (Method 11).

4-(4-butylphenyl)piperidine

Prepared using General Procedure 18: To a stirring solution of 1-benzyl-4-(4-butylphenyl)-1,2,3,6-tetrahydropyridine (3.27 g, 10.71 mmol) in MeOH (30 mL) was added ammonium formate (2.025 g, 32.1 mmol). After complete dissolution, 10% Pd on carbon (Johnson and Matthey type 39 paste, 1.2 g) was added and the reaction mixture heated under reflux. After 16 h, the reaction mixture was allowed to cool and filtered through a glass microfibre filter, washing with MeOH. Solvents were evaporated and the resiude taken into ether (50 mL) and washed with NaHCO3 (50 mL). The aqueous was further extracted with ether (50 mL) and the combined organic extracts dried over MgSO₄ and solvents evaporated to afford 2 g (86%) of 4-(4-butylphenyl)piperidine as a yellow solid. LCMS-ESI (m/z) calculated for C₂₂H₂₇N: 217.4. found 218.2 [M+H]⁺, t_(R)=3.09 min (Method 10).

(S)-1-(2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(4-butylphenyl)-piperidin-1-yl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylic acid (Compound 1412)

To a stirring solution of (S)-1-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)azetidine-3-carboxylic acid (INT-71) (504 mg, 0.882 mmol) and 4-(4-butylphenyl)piperidine (249 mg, 1.146 mmol) in toluene (12 mL) was added sodium tert-butoxide (339 mg, 3.53 mmol), BINAP (54.9 mg, 0.088 mmol) and Pd₂(dba)₃ (40.4 mg, 0.044 mmol). The resulting reaction mixture was degassed at 40° C., before being heated at 100° C. for 16 h. The mixture was allowed to cool and quenched with 1 M HCl (5 mL) then extracted with EA (3×10 mL). The combined organic extracts were washed with brine (10 mL), dried over MgSO₄ and solvents evaporated. Column chromatography (EA/AcOH/DCM/iso-hexanes) then re-slurry from ACN gave 180 mg (29%) of (S)-1-(2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-(4-butylphenyl)piperidin-1-yl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylic acid (Compound 1412) as a cream solid. LCMS-ESI (m/z) calculated for C₄₁H₄₉N₅O₄S: 707.4. found 708.3 [M+H]⁺, t_(R)=3.12 min (Method 11). ¹H NMR (400 MHz, DMSO-d₆) δ 12.73 (s, 1H), 8.72 (app dd, J=8.2, 3.8 Hz, 1H), 8.61 (app d, J=1.9 Hz, 2H), 8.16 (app dd, J=8.2, 6.0 Hz, 2H), 7.70 (app dd, J=3.8, 1.2 Hz, 1H), 7.38 (d, J=8.1 Hz, 2H), 7.25-7.06 (m, 4H), 6.93 (app dd, J=3.9, 1.8 Hz, 1H), 4.64 (p, J=8.2, 7.7 Hz, 1H), 4.46-4.41 (m, 0.5H), 4.31-4.29 (m, 0.5H), 4.23-4.11 (n, 1H), 4.11-3.71 (m, 4H), 3.48-3.42 (m, 0.5H), 3.35-3.29 (m, 0.5H), 3.14-2.81 (m, 4H), 2.74-2.10 (m, 1H), 2.56-2.52 (m, 2H), 1.99-1.62 (m, 4H), 1.64-1.40 (m, 2H), 1.32 (m, 11H), 0.90 (t, J=7.3 Hz, 3H).

(1s,4r)-methyl 4-popylcyclohexanecarboxylate

Prepared using General Procedure 22: To stirring methanol (1.2 L) was added trimethylsilyl chloride (75 mL, 591 mmol). After 10 min (1s,4r)-4-propylcyclohexanecarboxylic acid (102 g, 599 mmol) was added and the mixture heated under reflux for 3.5 h. The mixture was allowed to cool, solvents evaporated, and azeotroped with toluene (2×300 mL). The residue was taken into DCM (200 mL) and stirred with saturated aqueous sodium bicarbonate (200 mL) for 2 h. The layers were separated and the organics dried over MgSO₄ and solvents evaporated to afford 109 g (99%) of (1s,4r)-methyl 4-propylcyclohexanecarboxylate (109 g, 586 mmol, 98% yield) as a colourless oil. LCMS-ESI (m/z) calculated for C₁₁H₂₀O₂: 184.2; no UV or m/z observed. ¹H NMR (400 MHz, Chloroform-d) δ 3.68 (s, 3H), 2.24 (tt, J=12.3, 3.6 Hz, 1H), 2.06-1.91 (m, 2H), 1.91-1.73 (m, 2H), 1.50-1.37 (m, 2H), 1.37-1.28 (m, 2H), 1.28-1.14 (m, 3H), 0.99-0.82 (m, 5H).

4-((1s,4r)-4-propylcyclohexyl)hepta-1,6-dien-4-ol

To a stirring solution of (1r,4r)-methyl 4-propylcyclohexanecarboxylate (33.5 g, 182 mmol) in THF (450 mL) at −10° C. was added allylmagnesium chloride in THF (200 mL of a 2 M solution in THF 400 mmol) such that the internal temperature was maintained below 0° C. The mixture was allowed to warm slowly. After 16 h, the mixture was quenched with ammonium chloride (200 mL of a saturated aqueous solution) then treated with water (100 mL) and the layers were separated. The aqueous layer was further extracted with Et₂O (2×350 mL) and the combined organic extracts dried over MgSO₄ and solvents evaporated to afford 42.3 g (98%) of 4-((1s,4r)-4-propylcyclohexyl)hepta-1,6-dien-4-ol (42.3 g, 161 mmol, 89% yield) as a yellow oil. LCMS-ESI (m/z) calculated for C₁₆H₂₈O: 236.2; no UV or m/z observed. ¹H NMR (400 MHz, Chloroform-d) δ 6.01-5.76 (m, 2H), 5.23-5.02 (m, 4H), 2.41-2.10 (m, 4H). 1.87-1.75 (m, 4H), 1.47-1.27 (m, 3H), 1.25-1.05 (m, 5H), 0.96-0.81 (m, 5H).

1-benzyl-4-((1s,4r)-4-propylcyclohexyl)piperidin-4-ol

A stirring solution of 4-((1s,4r)-4-propylcyclohexyl)hepta-1,6-dien-4-ol (3.22 g, 13.62 mmol) in DCM (50 mL) at −78° C. was treated with ozone until the observation of a persistent blue colour. Oxygen was bubbled through until the blue colour was discharged then the mixture blanketed under nitrogen and treated with a solution of triphenylphosphine (7.86 g, 30.0 mmol) in DCM (10 mL). The mixture was allowed to warm slowly to room temperature and solvents evaporated. The residue was taken into ether (50 mL) and stirred for 30 min. The precipitate was removed by filtration and the solvents evaporated. The residue was taken into DCE (100 mL) and the resulting stirred solution treated with benzylamine (3.27 mL, 30.0 mmol). After 5 min, sodium triacetoxyborohydride (12.70 g, 59.9 mmol) was added portionwise. After 16 h, the mixture was diluted with DCM (50 mL) washed with aqueous sodium bicarbonate (250 mL) and concentrated. The residue was stirred in Et₂O (50 mL) for 30 min and the precipitate removed by filtration. The solvents were evaporated and the residue purified by strong cation exchange capture-and-release ion exchange chromatography. The residue was further purified by column chromatography (DCM/MeOH/NH₃) to afford 2.95 g (69%) of 1-benzyl-4-((1s,4r)-4-propylcyclohexyl)piperidin-4-ol as a yellow oil. LCMS-ESI (m/z) calculated for C₂₁H₃₃NO: 315.3. found 316.8 [M+H]⁺, t_(R)=1.97 min (Method 6).

1-benzyl-4-((1r,4r)-4-propylcyclohexyl)-1,2,3,6-tetrahydropyridine

To a stirring solution of 1-benzyl-4-((1s,4r)-4-propylcyclohexyl)piperidin-4-ol (2.94 g, 9.32 mmol) in DCM (150 mL) was added thionyl chloride (2.38 mL, 32.6 mmol). After 3 h, the mixture was treated with ice-water (50 mL) and basified with NaOH (2 N aqueous, 30 mL). The layers were separated and the aqueous layer was further extracted with DCM (50 mL). The combined organic extracts were dried over MgSO₄ and solvents evaporated. The residue was purified by column chromatography (DCM/MeOH/NH₃) to afford 1.69 g (61%) of 1-benzyl-4-((1s-4r)-4-propylcyclohexyl)-1,2,3,6-tetrahydropyridine as a yellow oil. LCMS-ESI (m/z) calculated for C₂₁H₃₁N: 297.3. found 298.8 [M+H]⁺, t_(R)=2.23 min (Method 6).

4-((1s,4r)-4-propylcyclohexyl)piperidine

Prepared using General Procedure 18: A solution of 1-benzyl-4-((1s,4r)-4-propylcyclohexyl)-1,2,3,6-tetrahydropyridine (1.69 g, 5.68 mmol) in MeOH (30 mL) and AcOH (15 mL) was hydrogenated with the H-cube reactor (55 mm 10% Pd/C Cat-cart, 55° C., 1 mL/min, repeated passes) until such time as the reaction was adjudged complete by LCMS analysis. The solvents were evaporated and the residue taken up in DCM (15 mL) and washed with aqueous sodium bicarbonate (50 mL). The solvents were evaporated and the residue purified by column chromatography (DCM/MeOH/NH₃) to afford 869 mg (73%) of 4-((1s,4r)-4-propylcyclohexyl)piperidine as a waxy solid. LCMS-ESI (m/z) calculated for C₁₄H₂₇N: 209.2. found 210.3 [M+H]⁺, t_(R)=1.70 min (Method 11).

4-((1s,4r)-4-propylcyclohexyl)pyridine

A stirring solution of 4-((1s,4r)-4-propylcyclohexyl)hepta-1,6-dien-4-ol (17 g, 71.9 mmol) in DCM (400 mL) was cooled to −78° C. then treated with ozone until the observation of a persistent blue colour. Oxygen was bubbled through until the colour was discharged whereupon triphenylphosphine (41.5 g, 158 mmol) was added. After 1 h, ammonia (144 mL of a 7 M solution in MeOH 1007 mmol) was added. The mixture was allowed to warm slowly to ambient temperature. After a further 12 h, solvents were evaporated and the mixture treated with ether (50 mL). The solid was removed by filtration and the liquors evaporated. Column chromatography (EA/iso-hexanes) gave 5 g (34%) of 4-((1s,4r)-4-propylcyclohexyl)pyridine as a yellow oil. LCMS-ESI (m/z) calculated for C₁₄H₂₁N: 203.2. found 204.3 [M+H]⁺, t_(R)=1.62 min (Method 11).

4-((1s,4r)-4-propylcyclohexyl)piperidine

To a stirred solution of 4-(4-propylcyclohexyl)pyridine (10 g, 49.2 mmol) in EtOH/AcOH (2:1, 500 mL) was added 5% rhodium on carbon (3.04 g, 29.5 mmol). The solution was heated to 75° C. under a hydrogen atmosphere (5 bar). After 16 h, the mixture was allowed to cool and filtered through Celite. The solvents were evaporated and the residue dissolved in EA (60 mL) then washed with NaOH (40 mL of a 2 M aqueous solution). The aqueous layer was further extracted with EA (2×30 ml). The combined organic layers were dried over MgSO₄ and evaporated to give 9.8 g (95%) of 4-((1s,4r)-4-propylcyclohexyl)piperidine as a white solid. LCMS-ESI (m/z) calculated for C₁₄H₂₇N: 209.2. found 210.3 [M+1-1]⁺, t_(R)=1.70 min (Method 11).

1-((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-((1s,4r)-4-propylcyclohexyl)piperidin-1-yl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylic acid (Compound 1413)

Prepared using General Procedure 11: To a stirring solution of (S)-1-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl) azetidine-3-carboxylic acid (INT-71) (341 mg, 0.597 mmol) and 4-((1s,4r)-4-propylcyclohexyl)piperidine (150 mg, 0.716 mmol) in toluene (9 mL, degassed) were added sodium tert-butoxide (230 mg, 2.39 mmol), BINAP (37.2 mg, 0.060 mmol) and Pd₂(dba)₃ (54.7 mg, 0.060 mmol). The resulting reaction mixture was degassed again at 40° C., before being heated at 100° C. After 16 h, the mixture was allowed to cool then poured onto 1 M HCl (10 mL) and extracted with EA (3×20 mL). The combined organic extracts were dried over MgSO₄ and solvents evaporated. Column chromatography (EA/AcOH/DCM/iso-hexanes) followed by re-slurry from ACN gave 84 mg (20%) of 1-((S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-((4s,4r)-4-propyl cyclohexyl)piperidin-1-yl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylic acid (Compound 1413). LCMS-ESI (m/z) calculated for C₄₀H₅₃N₅O₄S: 699.4. found 700.3 [M+H]⁺, t_(R)=3.29 min (Method 11). ¹H NMR (400 MHz, DMSO-d₆) δ 12.78 (s, 1H), 8.72 (app dd, J=8.3, 3.9 Hz, 1H), 8.54 (app d, J=2.0 Hz, 2H), 8.28-7.99 (m, 2H), 7.69 (app dd, J=3.9, 1.3 Hz, 1H), 7.37 (app d, J=8.1 Hz, 2H), 6.92 (app dd, J=3.9, 1.8 Hz, 1H), 4.63 (p, J=7.8, 6.8 Hz, 1H), 4.45-4.41 (m, 0.5H), 4.31-4.27 (m, 0.5H), 4.16 (q, J=7.0, 5.4 Hz, 1H), 4.03 (dt, J=19.2, 9.4 Hz, 1H), 3.90 (app t, J=8.4 Hz, 3H), 3.47-3.40 (m, 0.5H), 3.31-3.27 (m, 0.5H), 3.18-2.85 (m, 2H), 2.71 (t, J=11.6 Hz, 2H), 1.74 (d, J=10.9 Hz, 6H), 1.37-1.20 (m, 15H), 1.20-0.90 (m, 5H), 0.85 (t, J=7.3 Hz, 5H).

Compound 1414 was prepared from (S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(4-(tert-butyl)benzamido)propanoic acid (INT-27) using General Procedures 7, 4 and 11 sequentially.

Compounds 1415 and 1416 was prepared from (S)-tert-butyl bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoate (INT-17) using General Procedures 8, 7, 4 and 11 sequentially.

Compounds 1417 and 1418 were prepared from tert-butyl (S)-1-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)azetidine-3-carboxylate (INT-38) using General Procedures 10 then 8.

Compound 1419 were prepared from (S)-tert-butyl 1-((S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl) pyrrolidine-2-carboxylate (INT-54) using General Procedures 8 and 11 sequentially.

Compounds 1421-1423 were prepared from (rac)-1-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)azetidine-3-carboxylic acid (racemic-INT-71) using General Procedure 11.

Appropriately substituted 4-(4-alkylcyclohexyl)piperidines were prepared from the corresponding 4-alkylcyclohexanones and 4-bromopyridine using General Procedures 37 and 18 sequentially.

Compounds 1424, 1427-1429, 1431, 1438, and 1439 were prepared from the appropriately substituted 4-(4-alkylcyclohexyl)piperidines and (S)-1-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)-azetidine-3-carboxylic acid (INT-71) using General Procedure 11.

Compounds 1425, 1426 and 1430 were prepared from (S)-1-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)azetidine-3-carboxylic acid (INT-71) using General Procedure 11.

4-(4-propylphenyl)piperazine was prepared from 4-propylphenylmagnesium bromide and 1-benzylpiperidin-4-one using the conditions of General Procedures 38, 39 and 18 sequentially.

Compound 1432 was prepared from 4-(4-propylphenyl)piperazine and (S)-1-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)azetidine-3-carboxylic acid (INT-71) using General Procedure 11.

Compound 1433 was prepared from (S)-tert-butyl 3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoate (INT-17) using General Procedures 8, 7, 8 and 11 sequentially.

1-(4-propylcyclohexyl)piperidin-4-one was prepared from 4-propylcyclohexanone and piperidin-4-ol using General Procedures 15 and 24 sequentially.

Compound 1434 was prepared from 1-(4-propylcyclohexyl)piperidin-4-one and (S)-1-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)azetidine-3-carboxylic acid (INT-71) using General Procedure 37.

1-(4-propylcyclohexyl)piperazine was prepared from 4-propylcyclohexanone and benzyl piperazine-1-carboxylate using General Procedures 15 and 18 sequentially.

Compounds 1435 and 1436 were prepared from 1-(4-propylcyclohexyl)piperazine and (S)-1-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)azetidine-3-carboxylic acid (INT-71) using General Procedure 11.

Compound 1437 was prepared from (R)-2-((S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanamido)propanoic acid (INT-72) using General Procedure 11.

2-methoxy-5-(4-((1s,4r)-4-propylcyclohexyl)piperidin-1-yl)pyrimidine

Prepared using General Procedure 11: A stirring solution of sodium tert-butoxide (2.203 g, 22.93 mmol), 4-((4s,4r)-4-propylcyclohexyl)piperidine (1.600 g, 7.64 mmol) and 5-bromo-2-methoxypyrimidine (1.444 g, 7.64 mmol) in toluene (60 mL) was purged with nitrogen for 10 mins. 2,2′-bis(diphenylphosphino)-1,1′-binaphthalene (0.095 g, 0.153 mmol) and Pd₂dba₃ (0.064 g, 0.076 mmol) were added and purging was continued for a further 10 minutes. The reaction mixture was then heated to 100° C. and stirred under nitrogen for 1.5 h. The reaction was allowed to cool then diluted with water (100 mL) and extracted with EA (2×100 mL). The combined organic layers were dried over MgSO₄ and solvents evaporated. The residue was purified through a silica plug (DCM/EA) to afford 2.04 g (84%) of 2-methoxy-5-(4-((1s,4r)-4-propylcyclohexyl)piperidin-1-yl)pyrimidine. LCMS-ESI (m/z) calculated for C₁₉H₃₁N₃O: 317.3. found 318.3 [M+H]⁺, t_(R)=2.27 min (Method 11).

5-(4-((1s,4r)-4-propylcyclohexyl)piperidin-1-yl)pyrimidin-2-ol

To a stirring mixture of HCl (50 mL of a 6 M solution in IPA) and THF (60 mL) was added 2-methoxy-5-(4-((1s,4r)-4-propylcyclohexyl)piperidin-1-yl)pyrimidine (2 g, 6.30 mmol) and the mixture heated under reflux. After 7 h, solvents were evaporated and the residue triturated with Et₂O (25 mL) to afford 1.8 g (94%) of 5-(4-((1s,4r)-4-propylcyclohexyl)piperidin-1-yl)pyrimidin-2-ol as a yellow solid. LCMS-ESI (m/z) calculated for C₁₈H₂₉N₃O: 303.2. found 304.3 [M+H]⁺, t_(R)=1.65 min (Method 11).

2-chloro-5-(4-((4s,4r)-4-propylcyclohexyl)piperidin-1-yl)pyrimidine (INT-80)

A stirring solution of 5-(4-((1s,4r)-4-propylcyclohexyl)piperidin-1-yl)pyrimidin-2-ol (1.8 g, 5.93 mmol) in phosphoryl trichloride (10 mL, 109 mmol) was heated to 100° C. After 2 h, the mixture was evaporated and the residue dissolved in DCM (20 mL) and washed with NaHCO₃ (20 mL). The organic layer was dried over MgSO₄ and evaporated. The residue was triturated from acetonitrile (20 mL) to afford 1.12 g (59%) of 2-chloro-5-(4-((1s,4r)-4-propylcyclohexyl)piperidin-1-yl)pyrimidine (INT-80) as a beige solid. LCMS-ESI (m/z) calculated for C₁₈H₂₈ClN₃: 321.2. found 322.5 [M+H]⁺, t_(R)=2.30 min (Method 11).

(S)-tert-butyl (3-(4-bromophenyl)-1-(methylsulfonamido)-1-oxopropan-2-yl)carbamate

Prepared using General Procedure 7. To a stirring solution of (S)-3-(4-bromophenyl)-2-((tert-butoxycarbonyl)amino)propanoic acid (1 g, 2.91 mmol) in DCM (20 mL) was added methanesulfonamide (2.76 g, 29.1 mmol), DIEA (2.53 ml, 14.53 mmol) and DMAP (0.710 g, 5.81 mmol) followed by EDC (0.780 g, 4.07 mmol). After 100 h, the mixture was filtered, diluted with DCM (30 mL) and washed with saturated aqueous NH₄Cl (50 mL). The organics were dried over MgSO₄ and solvents evaporated to afford 1.154 g (94%) of (S)-tert-butyl (3-(4-bromophenyl)-1-(methylsulfonamido)-1-oxopropan-2-yl)carbamate. LCMS-ESI (m/z) calculated for C₁₅H₂₁BrIN₂O₅S: 420.0. found 443.1 [M+Na]⁺, t_(R)=2.19 min (Method 11).

(S)-2-amino-3-(4-bromophenyl)-N-(methylsulfonyl)propanamide hydrochloride

Prepared using General Procedure 8. To a stirring solution of (S)-tert-butyl (3-(4-bromophenyl)-1-(methylsulfonamido)-1-oxopropan-2-yl)carbamate (1.15 g, 2.73 mmol) in DCM (20 mL) was added HCl (0.83 mL of a 4 M solution in dioxane, 3.32 mmol). After 16 h, the precipitate was collected by filtration to afford 0.673 g (69%) of (S)-2-amino-3-(4-bromophenyl)-N-(methylsulfonyl)propanamide hydrochloride as a white solid. LCMS-ESI (m/z) calculated for C₁₀H₁₃BrN₂O₃S: 320.0. found 321.0 [M+H]⁺. t_(R)=1.08 min (Method 11).

(S)—N-(3-(4-bromophenyl)-1-(methylsulfonamido)-1-oxopropan-2-yl)-5-(tert-butyl)thiophene-2-carboxamide

Prepared using General Procedure 7. To a stirring solution of 5-(tert-butyl)thiophene-2-carboxylic acid (0.229 g, 1.241 mmol) and DIEA (0.72 ml, 4.14 mmol) in DMF (5 mL) was added HATU (0.472 g, 1.241 mmol) followed by (S)-2-amino-3-(4-bromophenyl)-N-(methylsulfonyl)propanamide hydrochloride (0.37 g, 1.035 mmol). After 2 h, the mixture was diluted with water (20 mL) and extracted with EA (2×30 mL). The combined organic layers were washed with brine (3×100 mL) dried over MgSO₄ and solvents evaporated. Column chromatography (Et₂O/AcOH/DCM/iso-hexanes) gave 282 mg (56%) of (S)—N-(3-(4-bromophenyl)-1-(methylsulfonamido)-1-oxopropan-2-yl)-5-(tert-butyl)thiophene-2-carboxamide as white solid. LCMS-ESI (m/z) calculated for C₁₉H₂₃BrN₂O₄S₂: 486.0. found 487.0 [M+H]⁺, t_(R)=2.53 min (Method 11).

(S)-5-(tert-butyl)-N-(1-(methylsulfonamido)-1-oxo-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propan-2-yl)thiophene-2-carboxamide (INT-81)

To a stirring solution of 4,4,4′,4′,5,5,5′,5′-octamethyl-2,2′-bi(1,3,2-dioxaborolane) (0.169 g, 0.667 mmol) and (S)—N-(3-(4-bromophenyl)-1-(methylsulfonamido)-1-oxopropan-2-yl)-5-(tert-butyl)thiophene-2-carboxamide (0.271 g, 0.556 mmol) in dioxane (4 mL) was added potassium acetate (0.164 g, 1.668 mmol) and the mixture de-gassed. PdCl₂dppf (0.020 g, 0.028 mmol) was added and the mixture then heated under reflux for 2 h. The mixture was allowed to cool then diluted with 1 M HCl (10 mL) and extracted with EA (2×20 mL). The combined organic layers were dried over MgSO₄ and solvents evaporated. Column chromatography (EA/AcOH/DCM/iso-hexanes) gave 0.22 g (74%) of (S)-5-(tert-butyl)-N-(1-(methylsulfonamido)-1-oxo-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propan-2-yl)thiophene-2-carboxamide as a white solid (INT-81). LCMS-ESI (m/z) calculated for C₂₅H₃₅BN₂O₆S₂: 534.2. found 535.2 [M+H]⁺, t_(R)=7.61 min (Method 10).

5-(tert-butyl)-N—((S)-1-(methylsulfonamido)-1-oxo-3-(4-(5-(4-((1 s,4r)-4-propylcyclohexyl)piperidin-1-yl)pyrimidin-2-yl)phenyl)propan-2-yl)thiophene-2-carboxamide (Compound 1438)

Prepared using General Procedure 10. To a stirring solution of 2-chloro-5-(4-((1s,4r)-4-propylcyclohexyl)piperidin-1-yl)pyrimidine (INT-80) (0.143 g, 0.445 mmol) and (S)-5-(tert-butyl)-N-(1-(methylsulfonamido)-1-oxo-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propan-2-yl)thiophene-2-carboxamide (INT-81) (0.216 g, 0.404 mmol) in dioxane (1.5 mL) and toluene (1.5 mL) was added a solution of NaHCO₃ (0.102 g, 1.212 mmol) in water (1 mL) and the mixture de-gassed. PdCl₂dppf (0.030 g, 0.040 mmol) was added and the mixture heated under reflux. After 6 h, the mixture was allowed to cool then poured into 1 M HCl (20 mL) and extracted with EA (2×50 mL). The combined organic layers were dried over MgSO₄ and solvents evaporated. Column chromatography (EA/AcOH/DCM/iso-hexanes) gave 0.17 g (61%) of 5-(tert-butyl)-N—((S)-1-(methylsulfonamido)-1-oxo-3-(4-(5-(4-((1s,4r)-4-propylcyclohexyl)piperidin-1-yl)pyrimidin-2-yl)phenyl)propan-2-yl)thiophene-2-carboxamide (Compound 1438). LCMS-ESI (m/z) calculated for C₃₇H₅₁N₅O₄S₂: 693.3. found 694.4 [M+H]⁺, t_(R)=11.63 min (Method 10). ¹H NMR (400 MHz, DMSO-d₆) 12.18 (s, 1H), 8.69 (d, J=7.8 Hz, 1H), 8.54 (s, 2H), 8.26-8.01 (m, 2H), 7.67 (d, J=3.9 Hz, 1H), 7.45 (d, J=8.2 Hz, 2H), 6.93 (d, J=3.8 Hz, 1H), 4.73-4.67 (m, 1H), 3.91 (d, J=12.4 Hz, 2H), 3.23 (s, 3H), 3.22-3.13 (m, 1H), 3.03 (dd, J=13.7, 10.7 Hz, 1H), 2.71 (t, J=11.6 Hz, 2H), 1.74 (app d, J=10.7 Hz, 6H), 1.33-1.21 (m, 14H), 1.18-1.09 (m, 3H), 1.05-0.75 (m, 8H).

(S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoic acid

Prepared using General Procedure 8: To a stirring solution of text-butyl (S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoate (INT-17) (12.0 g, 21.60 mmol) in DCM (180 mL) was added TFA (120 mL). After 3 h, the solution was poured into ice-water (300 ml) and separated. The organic layer was washed with water (2×300 mL), dried over MgSO₄, and solvents evaporated to afford 10.55 g (100%) of (S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoic acid. LCMS-ESI (m/z) calculated for C₂₂H₂₂BrN₃O₃S: 487.1. found 488.1 [M+H]⁺, t_(R)=2.60 min (Method 11).

(S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-((1s,4r)-4-propylcyclohexyl)piperidin-1-yl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 1439)

Prepared using General Procedure 11. A 250-ml round-bottomed flask equipped for magnetic stirring was charged with cesium carbonate (12.01 g, 36.9 mmol) and heated to 150° C. under vacuum. After 5 h, the flask was allowed to cool to 85° C., blanketed under N₂, then treated with dioxane (100 mL) and (S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoic acid (4 g, 8.19 mmol) and 4-((1s,4r)-4-propylcyclohexyl)piperidine (2.058 g, 9.83 mmol). The mixture was de-gassed then treated with Xantphos Pd G3 (0.311 g, 0.328 mmol). After 16 h, the mixture was again de-gassed then treated with further 4-((1s,4r)-4-propylcyclohexyl)piperidine (0.909 g, 4.34 mmol) and further Xantphos Pd G3 (0.311 g, 0.328 mmol). After a further 4 h, the mixture was treated with further Xantphos Pd G3 (0.311 g, 0.328 mmol). After a further 20 h, the mixture was allowed to cool then treated with DMSO (30 mL) and AcOH (2.3 ml, 41.0 mmol). After 1 h, the mixture was poured into a mixture of water (100 mL), THF (50 mL), AcOH (10 mL) and DCM (100 mL). After stirring for 1 h, the layers were separated and the aqueous diluted with water (100 mL) and AcOH (2 mL) then extracted with DCM (100 mL). The combined organic extracts were washed with a mixture of water (100 mL) and AcOH (2 mL) and evaporated. Column chromatography (AcOH/THF/DCM) gave moderately pure product that was then re-slurried from ACN (25 mL) to afford 1.66 g (31%) of (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-((1s,4r)-4-propylcyclohexyl)piperidin-1-yl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 1439) as a yellow solid. LCMS-ESI (m/z) calculated for C₃₆H₄₈N₄O₃S: 616.3. found 617.4 [M+H]⁺, t_(R)=2.60 min (Method 10).

Compound 1440 was prepared from tert-butyl (S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoate (INT-17) using General Procedures 8 and 11 sequentially.

Compounds 1441 and 1442 were prepared from (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-((1s,4r)-4-propylcyclohexyl)piperidin-1-yl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 1439) using General Procedure 7.

Compounds 1443-1460 were prepared from (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-((1s,4r)-4-propylcyclohexyl)piperidin-1-yl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 1439) using General Procedures 7 then 4.

Compounds 1461-1470 were prepared from (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-((1s,4r)-4-propylcyclohexyl)piperidin-1-yl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 1439) using General Procedures 7 then 8.

Compounds 1471-1473 were prepared from (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-((1s,4r)-4-propylcyclohexyl)piperidin-1-yl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 1439) using General Procedures 7, 4, then 8.

Compounds 1474-1493 were prepared from (S)-1-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)azetidine-3-carboxylic acid (INT-71) using General Procedure 11.

1-bromo-4-propoxybenzene

Prepared using General Procedure 12. To a stirring mixture of mixture of 4-bromophenol (2 g, 11.56 mmol) and potassium carbonate (1.743 g, 12.61 mmol) in DMF (20 mL) was added 1-iodopropane (1.537 mL, 15.76 mmol) and the mixture heated to 90° C. After 16 h, the mixture was poured onto water (100 mL) and extracted with Et₂O (2×100 mL). The combined organics were dried over MgSO₄ and solvents evaporated. Column chromatography (Et₂O/iso-hexanes) gave 2.2 g (97%) of 1-bromo-4-propoxybenzene as a colourless oil. LCMS-ESI (m/z) calculated for C₉H₁₁BrNO: 214.0; not recorded. ¹H NMR (400 MHz, Chloroform-d) δ 7.42-7.34 (m, 2H), 6.86-6.73 (m, 2H), 3.91 (t, J=6.6 Hz, 2H), 1.82 (app dtd, J=13.9, 7.4, 6.5 Hz, 2H), 1.05 (t, J=7.4 Hz, 3H).

1-benzyl-4-(4-propoxyphenyl)piperidin-4-ol

Prepared using General Procedure 38. To a stirring solution of 1-bromo-4-propoxybenzene (2.2 g, 10.23 mmol) in THF (25 mL) at −78° C. was added dropwise butyllithium (4.46 mL of a 2.5 M solution in hexanes 11.16 mmol). After 1 h, 1-benzylpiperidin-4-one (1.72 mL, 9.30 mmol) was added. The reaction mixture was allowed to warm slowly and stirred at ambient temperature. After 16 h, the mixture was quenched with NH₄Cl (30 mL) and extracted with EA (3×30 mL). The combined organic layers were washed with brine (30 mL), dried over MgSO₄ and solvents evaporated to give 3.03 g (100%) of 1-benzyl-4-(4-propoxyphenyl)piperidin-4-ol as a yellow oil. LCMS-ESI (m/z) calculated for C₂₁H₂₇NO₂: 325.2. found 326.2 [M+H]⁺, t_(R)=1.41 min (Method 11).

1-benzyl-4-(4-propoxyphenyl)-1,2,3,6-tetrahydropyridine

Prepared using General Procedure 39. To a stirring solution of 1-benzyl-4-(4-propoxyphenyl)piperidin-4-ol (3.02 g, 9.28 mmol) in DCM (15 mL) was added TFA (15 mL). After 2.5 h, the solvents were evaporated and the residue diluted with saturated aqueous NaHCO₃ (35 mL) and extracted with DCM (2×30 mL). The combined organic extracts were dried over MgSO₄ and solvents evaporated. Column chromatography (EA/iso-hexanes) gave 896 mg (31%) of 1-benzyl-4-(4-propoxyphenyl)-1,2,3,6-tetrahydropyridine as a yellow oil. LCMS-ESI (m/z) calculated for C₁₄H₂₁NO: 219.2. found 220.2 [M+H]⁺, t_(R)=1.23 min (Method 11).

4-(4-propoxyphenyl)piperidine

Prepared using General Procedure 18: To a stirring solution of 1-benzyl-4-(4-propoxyphenyl)-1,2,3,6-tetrahydropyridine (896 mg, 2.91 mmol) in MeOH (15 mL) was added ammonium formate (551 mg, 8.74 mmol). After complete dissolution, Pd/C (286 mg of Johnson and Matthey Type 39 paste) was added and the reaction mixture heated under reflux for 4 h. The mixture was allowed to cool and filtered through a glass microfiber filter, washing with MeOH. The solvents were evaporated and the residue purified by column chromatography (NH₃/MeOH/DCM) to afford 350 mg (55%) of 4-(4-propoxyphenyl)piperidine as an off-white solid. LCMS-ESI (m/z) calculated for C₁₄H₂₁NO: 219.2. found 220.2 [M+H]⁺, t_(R)=0.84 min (Method 11).

Compound 1494 was prepared from (S)-1-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-tert-butyl)thiophene-2-carboxamido)propanoyl)azetidine-3-carboxylic acid (INT-71) and 4-(4-propoxyphenyl)piperidine using General Procedure 11.

1-bromo-4-(2-methoxyethyl)benzene

To a stirring mixture of 2-(4-bromophenyl)ethanol (2 g, 9.95 mmol) in DMF (20 ml) at 0° C. was added sodium hydride (0.438 g of a 60% dispersion in mineral oil, 10.94 mmol). After 45 min, the cooling bath was removed and iodomethane (0.743 mL, 11.94 mmol) was added to the reaction mixture. After 3 h, the mixture was poured onto water (150 mL) and extracted with EA (3×50 mL). The combined organic extracts were dried over MgSO₄ and solvents evaporated. Column chromatography (Et₂O/iso-hexanes) gave 1.9 g (89%) of 1-bromo-4-(2-methoxyethyl)benzene) as an orange oil. LCMS-ESI (m/z) calculated for C₉H₁₁BrNO: 214.0; not recorded. ¹H NMR (400 MHz, Chloroform-d) δ 7.50-7.38 (m, 2H), 7.15-7.07 (m, 2H), 3.60 (t, J=6.8 Hz, 2H), 3.37 (s, 3H), 2.85 (t, J=6.9 Hz, 2H).

4-(4-(2-methoxyethyl)phenyl)piperidine

Following the sequence as described for the preparation of 4-(4-propoxyphenyl)piperidine from 1-bromo-4-propoxybenzene, 1-bromo-4-(2-methoxyethyl)benzene gave 4-(4-(2-methoxyethyl)phenyl)piperidine as a white solid. LCMS-ESI (m/z) calculated for C₁₄H₂₁NO: 219.2. found 220.2 [M+H]⁺, t_(R)=0.84 min (Method 11).

Compound 1495 was prepared from (S)-1-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)azetidine-3-carboxylic acid (INT-71) and 4-(4-(2-methoxyethyl)phenyl)piperidine using General Procedure 11.

4-((1s,4r)-4-propylcyclohexyl)piperidin-2-one

To a stirring solution of N-chlorosuccinimide (217 mg, 1.629 mmol) in Et₂O (3 mL) at 0° C. was added a solution of 4-((1s,4r)-4-propylcyclohexyl)piperidine (310 mg, 1.481 mmol) in Et₂O (3 mL) dropwise. After 16 h, the mixture was filtered, washing with Et₂O (20 mL). The filtrate was washed successively with water (20 mL) and brine (20 mL) dried over Na₂SO₄, filtered, and partially evaporated (to ˜4 mL). This solution was then added dropwise to a stirring mixture of potassium hydroxide (205 mg, 3.10 mmol) and EtOH (6 mL). After 16 h, the mixture was filtered and washed with EtOH (6 mL). The solvents were partially evaporated (to 3 mL) and the residue diluted with water (20 mL) and extracted with Et₂O (2×30 mL). The combined organic extracts were washed with brine (20 mL), dried over Na₂SO₄ and solvents partially evaporated (to ˜4 mL). This solution was then added to a stirring suspension of NaClO₂ (680 mg, 7.52 mmol), NaH₂PO₄ (868 mg, 7.23 mmol) and 2-methylbut-2-ene (7.2 mL of a 2 M solution in THF, 14.4 mmol) in THF (12 mL) and water (6 mL) at 0° C. After 16 h, the reaction mixture was diluted with EA (50 ml) and washed successively with saturated aqueous Na₂S₂O₃ (2×30 mL) and brine (30 mL). The organic layer was dried over MgSO₄ and solvents evaporated. Column chromatography (DCM/MeOH) gave 82 mg (25%) of 4-((1s,4r)-4-propylcyclohexyl)piperidin-2-one as a white solid. LCMS-ESI (m/z) calculated for C₁₄H₂₅NO: 223.2. found 224.2 [M+H]⁺, t_(R)=2.43 min (Method 11).

Compound 1496 was prepared from (S)-1-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)azetidine-3-carboxylic acid (INT-71) and 4-((1s,4r)-4-propylcyclohexyl)piperidin-2-one using General Procedure 11.

3-amino-2,2-dimethyl-1-(4-propylpiperidin-1-yl)propan-1-one

Prepared using General Procedures 7 and 8 sequentially. To a stirring solution of DIEA (1.7 mL, 9.21 mmol), 4-propylpiperidine (0.615 g, 4.83 mmol) and 3-((tert-butoxycarbonyl)amino)-2,2-dimethylpropanoic acid (1 g, 4.60 mmol) in DMF (10 mL) was added HATU (1.925 g, 5.06 mmol). After 1 h, the mixture was poured into water (100 mL) and extracted with EA (3×30 mL). The combined organic extracts were washed successively with 1 M HCl (2×50 mL), saturated aqueous NaHCO₃ (2×50 mL) and brine (20 mL), dried over MgSO₄ and evaporated. Column chromatography (acetone/iso-hexanes) gave the protected intermediate that was dissolved in DCM (8 mL) and treated with TFA (2 mL). After 3 h, the mixture was diluted with toluene (10 mL) and solvents evaporated. The residue was dissolved in DCM (20 mL), washed with saturated aqueous NaHCO₃ (50 mL), dried over Na₂SO₄ and solvents evaporated to afford 665 mg (64%) of 3-amino-2,2-dimethyl-1-(4-propylpiperidin-1-yl)propan-1-one. LCMS-ESI (m/z) calculated for C₁₃H₂₆N₂O: 226.2. found 227.2 [M+H]⁺, t_(R)=1.31 min (Method 11).

Compound 1497 was prepared from (S)-1-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)azetidine-3-carboxylic acid (INT-71) and 3-amino-3-methyl-1-(4-propylpiperidin-1-yl)butan-1-one using General Procedure II.

(E)-5-bromo-2-(prop-1-en-1-yl)pyridine

Prepared using General Procedure 10. To a stirring solution of 5-bromo-2-iodopyridine (1.226 g, 4.32 mmol) and (E)-4,4,5,5-tetramethyl-2-(prop-1-en-1-yl)-1,3,2-dioxaborolane (0.871 g, 5.18 mmol) in dioxane (20 mL) was added NaHCO₃ (12 mL of a 0.9 M aqueous solution, 10.80 mmol) and the mixture de-gassed. PdCl₂dppf (0.158 g, 0.216 mmol) was charged and the mixture heated under reflux. After 1 h, the mixture was allowed to cool then poured into saturated aqueous NH₄Cl (20 mL) and extracted with EA (2×60 ml). The combined organics were dried over MgSO₄ and solvents evaporated. Column chromatography (EA/iso-hexanes) gave 605 mg (71%) of (E)-5-bromo-2-(prop-1-en-1-yl)pyridine (605 mg, 2.57 mmol, 59.4% yield) as a white solid. LCMS-ESI (m/z) calculated for C₈H₈BrN: 197.0. found 198.0 [M+H]⁺, t_(R)=2.03 min (Method 11).

(E)-tert-butyl 6-(prop-1-en-1-yl)-5′,6′-dihydro-[3,4′-bipyridine]-1′(2′H)-carboxylate

Prepared using General Procedure 10. To a stirring solution of (E)-5-bromo-2-(prop-1-en-1-yl)pyridine (605 mg, 3.05 mmol) and tert-butyl 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-5,6-dihydropyridine-1(2H)-carboxylate (1228 mg, 3.97 mmol) in dioxane (16 mL) was added saturated aqueous NaHCO₃ (8.5 mL, 7.64 mmol) and the mixture de-gassed. PdCl₂dppf (112 mg, 0.153 mmol) was added and the mixture heated under reflux. After 1 h, the mixture was allowed to cool then treated with water (10 mL) and extracted with EA (3×20 mL), dried over MgSO₄ and solvents evaporated. Column chromatography (EA/iso-hexanes) gave 565 mg (62%) of (E)-tert-butyl 6-(prop-1-en-1-yl)-5′,6′-dihydro-[3,4′-bipyridine]-1′(2′H)-carboxylate as an orange oil. LCMS-ESI (m/z) calculated for C₈H₂₄N₂O₂: 300.2. found 301.2 [M+H]⁺, t_(R)=1.66 min (Method 11).

tert-butyl 4-(6-propylpyridin-3-yl)piperidine-1-carboxylate

Prepared using General Procedure 18. A solution of (E)-tert-butyl 6-(prop-1-en-1-yl)-5′,6′-dihydro-[3,4′-bipyridine]-1′(2′H)-carboxylate (565 mg, 1.881 mmol) in MeOH (60 mL) was hydrogenated in the H-Cube (10% Pd/C, 30×4 mm Cat-Cart, full hydrogen, 50° C., 1.5 mL/min) Solvents were evaporated to afford 478 mg (83%) of tert-butyl 4-(6-propylpyridin-3-yl)piperidine-1-carboxylate as a pale yellow oil. LCMS-ESI (m/z) calculated for C₁₈H₂₈N₂O₂: 304.2. found 305.2 [M+H]⁺, t_(R)=1.44 min (Method 11).

5-(piperidin-4-yl)-2-propylpyridine hydrochloride

Prepared using General Procedure 8. To a stirring solution of tert-butyl 4-(6-propylpyridin-3-yl)piperidine-1-carboxylate (478 mg, 1.570 mmol) in dioxane (8 ml) was added HCl (3.93 ml of a 4 M solution in dioxane, 15.70 mmol). After 16 h, solvents were evaporated to afford 378 mg (100%) of 5-(piperidin-4-yl)-2-propylpyridine hydrochloride. LCMS-ESI (m/z) calculated for C₁₃H₂₀N₂: 204.2. found 205.2 [M+H]⁺, t_(R)=0.15 min (Method 11).

Compound 1498 was prepared from (S)-1-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)azetidine-3-carboxylic acid (INT-71) and 5-(piperidin-4-yl)-2-propylpyridine hydrochloride using General Procedure 11.

2-(piperidin-4-yl)-5-propylpyrimidine hydrochloride

Following an analogous sequence to that described for the preparation of 5-(piperidin-4-yl)-2-propylpyridine hydrochloride, 5-bromo-2-iodopyrimidine gave 2-(piperidin-4-yl)-5-propylpyrimidine hydrochloride. LCMS-ESI (m/z) calculated for C₁₂H₁₉N₃: 205.2. found 206.2 [M+H]⁺, t_(R)=0.71 min (Method 11).

Compound 1499 was prepared from (S)-1-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)azetidine-3-carboxylic acid (INT-71) and 2-(piperidin-4-yl)-5-propylpyrimidine hydrochloride using General Procedure 11.

tert-butyl 4-(4-(cyanomethyl)phenyl)-5,6-dihydropyridine-1(2H)-carboxylate

Prepared using General Procedure 10: A stirring solution of tert-butyl 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-5,6-dihydropyridine-1(2H)-carboxylate (1.703 g, 5.51 mmol) and 2-(4-bromophenyl)acetonitrile (1.2 g, 6.12 mmol) in dioxane (8 mL) was treated with a solution of NaHCO₃ (1.286 g, 15.30 mmol) in water (4 mL) and de-gassed. PdCl₂dppf (0.224 g, 0.306 mmol) was charged and the mixture heated under reflux. After 5 h, the mixture was allowed to cool then poured into water (100 mL) and extracted with EA (2×100 mL). The combined organics were dried over MgSO₄ and solvents evaporated. Column chromatography (EA/iso-hexane/DCM) gave 1.388 g (76%) of tert-butyl 4-(4-(cyanomethyl)phenyl)-5,6-dihydropyridine-1(2H)-carboxylate as a pale yellow solid. LCMS-ESI (m/z) calculated for C₁₈H₂₂N₂O₂: 298.2. found 321.1 [M+Na]⁺, t_(R)=2.45 min (Method 11).

tert-butyl 4(4-(cyanomethyl)phenyl)piperidine-1-carboxylate

Prepared using General Procedure 18. To a stirring solution of tert-butyl 4-(4-(cyanomethyl)phenyl)-5,6-dihydropyridine-1(2H)-carboxylate (1.09 g, 3.65 mmol) in a mixture of EtOH (30 mL) and THF (10 mL) was added 180 mg of Pd/C (180 mg of Johnson and Matthey Type 38H Paste) and the mixture hydrogenated under 2 bar. After 1 h, the mixture was filtered and solvents evaporated to afford 1.09 g (100%) of tert-butyl 4-(4-(cyanomethyl)phenyl)piperidine-1-carboxylate as a grey solid. LCMS-ESI (m/z) calculated for C₁₈H₂₄N₂O₂: 300.2. found 301.2 [M+H]⁺, t_(R)=2.48 min (Method 11).

2-(4-(piperidin-4-yl)phenyl)acetonitrile hydrochloride

Prepared using General Procedure 8: To a stirring solution of tert-butyl 4-(4-(cyanomethyl)phenyl)piperidine-1-carboxylate (1.09 g, 3.63 mmol) in dioxane (10 mL) was added HCl (5 mL of a 4 M solution in dioxane, 20 mmol). After 16 h, solvents were evaporated to give 859 mg (100%) of 2-(4-(piperidin-4-yl)phenyl)acetonitrile hydrochloride as a light brown solid. LCMS-ESI (m/z) calculated for C₁₃H₁₆N₂: 200.2. found 201.1 [M+H]⁺, t_(R)=0.44 min (Method 11).

Compound 1500 was prepared from (S)-1-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)azetidine-3-carboxylic acid (INT-71) and 2-(4-(piperidin-4-yl)phenyl)acetonitrile hydrochloride using General Procedure 11.

3-(piperidin-4-yl)-6-propylpyridazine hydrochloride

Following an analogous sequence to that described for the preparation of 5-(piperidin-4-yl)-2-propylpyridine hydrochloride, 3,6-dibromopyridazine gave 3-(piperidin-4-yl)-6-propylpyridazine hydrochloride. LCMS-ESI (m/z) calculated for C₁₂H₁₉N₃: 205.2. found 206.2 [M+H]⁺, t_(R)=0.23 min (Method 11).

Compound 1501 was prepared from (S)-1-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)azetidine-3-carboxylic acid (INT-71) and 3-(piperidin-4-yl)-6-propylpyridazine hydrochloride using General Procedure 11.

tert-butyl 3-(2-((4-methoxyphenyl)sulfonyl)hydrazono)azetidine-1-carboxylate

To a stirring mixture of tert-butyl 3-oxoazetidine-1-carboxylate (1.693 g, 9.89 mmol) in toluene (30 mL) was added 4-methoxybenzenesulfonohydrazide (2 g, 9.89 mmol) and the mixture heated under reflux until complete dissolution was observed. After a further 2 h, the mixture was allowed to cool and solvents evaporated to afford 3.43 g (98%) of tert-butyl 3-(2-((4-methoxyphenyl)sulfonyl)hydrazono)azetidine-1-carboxylate as a white solid. LCMS-ESI (m/z) calculated for C₁₅H₂₁N₃O₅S: 355.1. found 299.9 [M+H−tBu]⁺, t_(R)=1.64 min (Method 11).

tert-butyl 3-(4-propylphenyl)azetidine-1-carboxylate

A vial was charged with tert-butyl 3-(2-((4-methoxyphenyl)sulfonyl)hydrazono)azetidine-1-carboxylate (1 g, 2.81 mmol), (4-propylphenyl)boronic acid (0.69 g, 4.22 mmol) and Cs₂CO₃ (1.375 g, 4.22 mmol) then dried under vacuum for 10 min. The tube was backfilled with nitrogen, then treated with dioxane (10 mL) and de-gassed. The mixture was then heated to 110° C. (sealed vial, bath temperature) with stirring for 18 h. The mixture was allowed to cool then treated with saturated aqueous NaHCO₃ (10 mL) and DCM (10 mL). The organics were split off through a hydrophobic frit and evaporated. Column chromatography (EA/iso-hexanes) gave 109 mg (14%) of tert-butyl 3-(4-propylphenyl)azetidine-1-carboxylate as a colourless oil. LCMS-ESI (m/z) calculated for C₁₇H₂₅NO₂: 275.2. found 220.1 [M+H−tBu]⁺, t_(R)=2.93 min (Method 11).

3-(4-propylphenyl)azetidine

Prepared using General Procedure 8: To a stirring solution of tert-butyl 3-(4-propylphenyl)azetidine-1-carboxylate (109 mg, 0.396 mmol) in DCM (1.6 mL) was added TFA (0.4 mL). After 16 h, the mixture was diluted with DCM (5 mL) and saturated aqueous NaHCO₃ (10 mL) and allowed to stir for 10 min. The organics were split off through a hydrophobic frit and evaporated to afford 79 mg (73%) of 3-(4-propylphenyl)azetidine. LCMS-ESI (m/z) calculated for C₁₂H₁₇N: 175.1. found 176.1 [M+H]⁺, t_(R)=1.17 min (Method 11).

Compound 1502 was prepared from (S)-1-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)azetidine-3-carboxylic acid (INT-71) and 3-(4-propylphenyl)azetidine using General Procedure 11.

3-(4-butylphenyl)azetidine

Following an analogous sequence to that described for the preparation of 3-(4-propylphenyl)azetidine, tert-butyl 3-oxoazetidine-1-carboxylate and 4-butylphenyl boronic acid gave 3-(4-butylphenyl)azetidine. LCMS-ESI (m/z) calculated for C₁₃H₁₉N: 189.2. found 190.2 [M+H]⁺, t_(R)=1.38 min (Method 11).

Compound 1503 was prepared from (S)-1-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)azetidine-3-carboxylic acid (INT-71) and 3-(4-butylphenyl)azetidine using General Procedure 11.

3-(4-propylphenyl)pyrrolidine

Following an analogous sequence to that described for the preparation of 3-(4-propylphenyl)azetidine, tert-butyl 3-oxopyrrolidine-1-carboxylate and 4-propylphenyl boronic acid gave 3-(4-propylphenyl)pyrrolidine. LCMS-ESI (m/z) calculated for C₁₃H₁₉N: 189.2. found 190.2 [M+H]⁺, t_(R)=1.27 min (Method 11).

Compound 1504 was prepared from (S)-1-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)azetidine-3-carboxylic acid (INT-71) and 3-(4-propylphenyl)pyrrolidine using General Procedure 11.

3-(4-butylphenyl)pyrrolidine

Following an analogous sequence to that described for the preparation of 3-(4-propylphenyl)azetidine, tert-butyl 3-oxopyrrolidine-1-carboxylate and 4-butylphenyl boronic acid gave 3-(4-butylphenyl)pyrrolidine. LCMS-ESI (m/z) calculated for C₁₄H₂₁N: 203.2. found 204.2 [M+H]⁺, t_(R)=1.45 min (Method 11).

Compound 1505 was prepared from (S)-1-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)azetidine-3-carboxylic acid (INT-71) and 3-(4-butylphenyl)pyrrolidine using General Procedure 11.

benzyl 4-((3-methoxy-3-oxopropyl)amino)piperidine-1-carboxylate

Prepared using General Procedure 15. To a stirring solution of glycine methyl ester HCl (2.5 g, 17.91 mmol) in DCM (150 mL) and MeOH (75 mL) was added benzyl 4-oxopiperidine-1-carboxylate (8.36 g, 35.8 mmol). After 5 min, NaBH(OAc)₃ (5.69 g, 26.9 mmol) was added. After 16 h, solvents were evaporated and the residue taken into water (50 mL) and extracted with DCM (50 mL then 2×10 mL). The combined organic extracts were dried over MgSO₄ and solvent evaporated. Column chromatography (EA/iso-hexanes) gave 4 g (70%) of benzyl 4-((3-methoxy-3-oxopropyl)amino)piperidine-1-carboxylate yield) as a glassy solid. LCMS-ESI (m/z) calculated for C₁₇H₂₄N₂O₄: 320.2. found 321.3 [M+H]⁺, t_(R)=0.97 min (Method 11).

benzyl 4-(3-methoxy-N-(3-methoxy-3-oxopropyl)-3-oxopropanamido)piperidine-1-carboxylate

Prepared using General Procedure 3. To a stirring solution of benzyl 4-((3-methoxy-3-oxopropyl)amino)piperidine-1-carboxylate (2.74 g, 8.55 mmol) in DCM (100 mL) was added TEA (3 ml, 21.4 mmol) then methyl 3-chloro-3-oxopropanoate (1.8 ml, 17.1 mmol). After 16 h, the reaction was quenched with water (50 mL) and extracted with DCM (3×50 mL). The combined organic extracts were dried over MgSO₄ and solvents evaporated. Column chromatography (EA/iso-hexanes) gave 2.5 g (69%) of benzyl 4-(3-methoxy-N-(3-methoxy-3-oxopropyl)-3-oxopropanamido)piperidine-1-carboxylate as a colourless oil. LCMS-ESI (m/z) calculated for C₂₁H₂₈N₂O₇: 420.2. found 421.5 [M+H]⁺, t_(R)=1.96 min (Method 11).

1′-benzyl 3-methyl 2,4-dioxo-[1,4′-bipiperidine]-1′,3-dicarboxylate

To a stirring solution of benzyl 4-(3-methoxy-N-(3-methoxy-3-oxopropyl)-3-oxopropanamido)piperidine-1-carboxylate (3.7 g, 8.80 mmol) in THF (150 mL) was added potassium tert-butoxide (1.086 g, 9.68 mmol) and the resulting mixture heated under reflux. After 4 h, the mixture was allowed to cool and poured into water (70 mL) and extracted with EA (3×85 mL). The combined organic extracts were dried over MgSO₄ and solvents evaporated. Column chromatography (EA/iso-hexanes) gave 2 g (58%) of 1′-benzyl 3-methyl 2,4-dioxo-[1,4′-bipiperidine]-1′,3-dicarboxylate as a colourless oil. LCMS-ESI (m/z) calculated for C₂₀H₂₄N₂O₆: 388.2. found 389.5 [M+H]⁺, t_(R)=1.96 min (Method 11).

benzyl 2,4-dioxo-[1,4′-bipiperidine]-1′-carboxylate

To a stirring solution of oxalic acid (1062 mg, 11.80 mmol) in water (12 mL) was added 1′-benzyl 3-methyl 2,4-dioxo-[1,4′-bipiperidine]-1′,3-dicarboxylate (2.2 g, 5.90 mmol) and the resulting mixture heated at 100° C. for 4 h. The reaction mixture was allowed to cool and extracted with EA (3×150 mL). The combined organic layers were dried over MgSO₄ and solvents evaporated. Column chromatography (EA/iso-hexanes) gave 0.8 g (41%) of benzyl 2,4-dioxo-[1,4′-bipiperidine]-1′-carboxylate as a colourless oil. LCMS-ESI (m/z) calculated for C₁₈H₂₂N₂O₄: 330.2. found 331.5 [M+H]⁺, t_(R)=1.69 min (Method 11).

benzyl 4-(4-bromo-2-oxo-5,6-dihydropyridin-1(2H)-yl)piperidine-1-carboxylate

To a stirring solution of DMF (0.64 ml, 8.27 mmol) in DCM (10 mL) at 0° C. was added oxalyl bromide (0.41 ml, 4.36 mmol). When gas evolution was observed to have ceased, a solution of benzyl 2,4-dioxo-[1,4′-bipiperidine]-1′-carboxylate (0.6 g, 1.816 mmol) in DCM (10 mL) was added and the resulting reaction was stirred at 0° C. for 1 h and then for a further 1 h at ambient temperature. The reaction was poured into ice-water (10 mL) and extracted with DCM (2×15 mL). The combined organic layers were dried over MgSO₄ and solvents evaporated. Column chromatography on companion (40 g column, 0-100% EA/iso-hexanes) gave 0.4 g (56%) benzyl 4-(4-bromo-2-oxo-5,6-dihydropyridin-1(2H)-yl)piperidine-1-carboxylate as a yellow oil. LCMS-ESI (m/z) calculated for C₁₈H₂₁BrN₂O₃: 392.1. found 393.3 [M+H]⁺, t_(R)=2.15 min (Method 11).

benzyl 4-(4-butyl-2-oxo-5,6-dihydropyridin-1(2H)-yl)piperidine-1-carboxylate

To a stirring solution of Pd₂dba₃ (46.6 mg, 0.051 mmol) and RuPhos (95 mg, 0.203 mmol) in DMA (2 mL) was added benzyl 4-(4-bromo-2-oxo-5,6-dihydropyridin-1(2H)-yl)piperidine-1-carboxylate (400 mg, 1.017 mmol) to afford a bromide solution. Meanwhile, in a separate vessel, a stirring suspension of ZnCl₂. TMEDA (513 mg, 2.034 mmol) in Et₂O (4 mL) at 0° C. was treated with butyllithium (0.8 ml of a 2.5 M solution in hexanes, 2 mmol). This mixture was allowed to warm to ambient temperature and then stirred for a further 15 min to afford an organozinc solution. The organozinc solution was added via cannula to the bromide solution. After 14 h, solvents were evaporated and the residue purified by column chromatography to afford 377 mg (100%) of benzyl 4-(4-butyl-2-oxo-5,6-dihydropyridin-1(2H)-yl)piperidine-1-carboxylate. LCMS-ESI (m/z) calculated for C₂₂H₃₀N₂O₃: 370.2. found 371.3 [M+H]⁺, t_(R)=2.37 min (Method 11).

4-butyl-[1,4′-bipiperidin]-2-one

Prepared using General Procedure 18. To a stirring solution of benzyl 4-(4-butyl-2-oxo-5,6-dihydropyridin-1(2H)-yl)piperidine-1-carboxylate (400 mg, 1.080 mmol) in MeOH (30 mL) was added Pd/C (34.5 mg, Johnson and Matthey Type 39 Paste). The mixture was hydrogenated under 5 bar. After 16 h, the mixture was filtered through Celite and solvents evaporated to give 140 mg (54%) of 4-butyl-[1,4′-bipiperidin]-2-one as a colourless oil. LCMS-ESI (m/z) calculated for C₁₄H₂₆N₂O: 238.2. found 239.4 [M+H]⁺, t_(R)=1.16 min (Method 11).

Compound 1506 was prepared from (S)-1-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)azetidine-3-carboxylic acid (INT-71) and 4-butyl-[1,4′-bipiperidin]-2-one using General Procedure 11.

4-(4-propylphenyl)azepane

Following an analogous sequence to that described for the preparation of 3-(4-propylphenyl)azetidine, tert-butyl 4-oxoazepane-1-carboxylate and 4-propylphenyl boronic acid gave 4-(4-propylphenyl)azepane. LCMS-ESI (m/z) calculated for C₁₅H₂₃N: 217.2. found 218.2 [M+H]⁺, t_(R)=1.47 min (Method 11).

Compound 1507 was prepared from (S)-1-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)azetidine-3-carboxylic acid (INT-71) and 4-(4-propylphenyl)azepane using General Procedure 11.

4-(4-butylphenyl)azepane

Following an analogous sequence to that described for the preparation of 3-(4-propylphenyl)azetidine, tert-butyl 4-oxoazepane-1-carboxylate and 4-butylphenyl boronic acid gave 4-(4-butylphenyl)azepane. LCMS-ESI (m/z) calculated for C₁₅H₂₃N: 231.2. found 232.2 [M+H]⁺, t_(R)=1.38 min (Method 11).

Compound 1508 was prepared from (S)-1-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)azetidine-3-carboxylic acid (INT-71) and 4-(4-butylphenyl)azepane using General Procedure 11.

3-(4-propylbenzyl)azetidine

Following an analogous sequence to that described for the preparation of 3-(4-propylphenyl)azetidine, tert-butyl 3-formylazetidine-1-carboxylate and 4-propylphenyl boronic acid gave 3-(4-propylbenzyl)azetidine. LCMS-ESI (m/z) calculated for C₁₃H₁₉N: 189.2. found 190.1 [M+H]⁺, t_(R)=1.32 min (Method 11).

Compound 1509 was prepared from (S)-1-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)azetidine-3-carboxylic acid (INT-71) and 3-(4-propylbenzyl)azetidine using General Procedure 11.

3-(4-butylbenzyl)azetidine

Following an analogous sequence to that described for the preparation of 3-(4-propylphenyl)azetidine, tert-butyl 3-formylazetidine-1-carboxylate and 4-butylphenyl boronic acid gave 3-(4-butylbenzyl)azetidine. LCMS-ESI (m/z) calculated for C₁₃H₁₉N: 203.2. found 204.2 [M+H]⁺, t_(R)=1.48 min (Method 11).

Compound 1510 was prepared from (S)-1-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)azetidine-3-carboxylic acid (INT-71) and 3-(4-butylbenzyl)azetidine using General Procedure 11.

1-(4-propylphenyl)piperazine

Prepared using General Procedure 11. To a stirring solution of 1-bromo-4-propylbenzene (0.389 ml, 2.51 mmol) in toluene (12 mL) was added piperazine (281 mg, 3.26 mmol) and sodium tert-butoxide (965 mg, 10.05 mmol). The mixture was de-gassed then treated with BINAP (156 mg, 0.251 mmol) and Pd₂(dba)₃ (115 mg, 0.126 mmol) then heated to 100° C. After 16 h, the mixture was allowed to cool then poured onto 1 M HCl (5 mL) and extracted with EA (3×10 mL). The combined organic layers were washed with brine (10 mL), dried over MgSO₄ and solvents evaporated. Column chromatography (NH₃/MeOH/DCM) gave 261 mg (51%) of 1-(4-propylphenyl)piperazine as a dark brown gum. LCMS-ESI (m/z) calculated for C₁₃H₂₀N₂: 204.2. found 205.2 [M+H]⁺, t_(R)=1.26 min (Method 11).

Compound 1511 was prepared from (S)-1-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)azetidine-3-carboxylic acid (INT-71) and 1-(4-propylphenyl)piperazine using General Procedure 11.

((1s,4r)-4-propylcyclohexyl)methanol

To a stirring solution of (1s,4r)-4-propylcyclohexanecarboxylic acid (10 g, 58.2 mmol) and TEA (9.40 ml, 67.5 mmol) in THF (100 mL) at 0° C. was added iso-butyl chloroformate (8.86 ml, 67.5 mmol). After 1 h, the precipitate was removed by filtration, washing through with further THF (40 mL). The combined THF solution was recooled to 0° C. with stirring and a solution of NaBH₄ (11.00 g, 291 mmol) in water (130 mL) added slowly. After 45 min, the reaction was diluted with EA (200 mL) and washed successively with saturated aqueous NH₄CI (100 mL), saturated aqueous NaHCO₃ (100 mL) and brine (100 mL), dried over MgSO₄ and evaporated. Column chromatography (Et₂O/iso-hexanes) gave 7.6 g (83%) of ((1s,4r)-4-propylcyclohexyl)methanol as a colourless oil. LCMS-ESI (m/z) calculated for C₁₀H₂₀O: 156.2: no response observed (Method 11). ¹H NMR (400 MHz, Chloroform-d) δ 3.38 (d, J=6.4 Hz, 2H), 1.83-1.63 (m, 4H), 1.41-1.34 (m, 1H). 1.30-1.19 (m, 2H), 1.18-1.02 (m, 3H), 0.96-0.71 (m, 7H).

(E)-methyl 3-((1s-4r)-4-propylcyclohexyl)acrylate

To a stirring solution of ((1s,4r)-4-propylcyclohexyl)methanol (7.6 g, 48.6 mmol) in DCM (250 mL) was added Dess-Martin Periodinane (22.69 g, 53.5 mmol). After 1 h, saturated aqueous sodium thiosulfate (20 mL) was added. After 5 min, water (50 mL) was added and the layers separated. The organic phase was washed successively with saturated aqueous NaHCO₃ (100 mL) and brine (100 mL) and dried over MgSO₄. This solution was then stirred with methyl 2-(triphenylphosphoranylidene)acetate (22.76 g, 68.1 mmol). After 16 h, solvents were evaporated and the residue purified by column chromatography (EA/iso-hexanes) to afford 4.85 g (47%) of (E)-methyl 3-((1s,4r)-4-propylcyclohexyl)acrylate as a yellow oil. LCMS-ESI (m/z) calculated for C₁₃H₂₂O₂: 210.2. found 211.2 [M+H]⁺, t_(R)=3.04 min (Method 11).

dimethyl 3-((1s,4r)-4-propylcyclohexyl)pentanedioate

To a stirred solution of DIEA (3.68 ml, 25.8 mmol) in THF (50 mL) at −78° C. was added butyllithium (10.3 mL of a 2.5 M solution in hexanes, 25.8 mmol). The resultant solution was stirred for 15 min whereupon methyl acetate (2.1 mL, 25.8 mmol) was added. After 30 min, a solution of (E)-methyl 3-((1s,4r)-4-propylcyclohexyl)acrylate (4.52 g, 21.49 mmol) in THF (2 mL) was added and the mixture allowed to warm slowly. After 72 h, the reaction was quenched into 1 M HCl (100 mL) and extracted with Et₂O (3×100 mL). The combined organics were washed with brine (100 mL), dried over MgSO₄ and solvents evaporated. The residue was purified by column chromatography (EA/iso-hexanes) to afford 0.82 g (13%) of dimethyl 3-((1s,4r)-4-propylcyclohexyl)pentanedioate as a colourless oil. LCMS-ESI (m/z) calculated for C₁₆H₂₈O₄: 284.2. found 285.3 [M+H]⁺, t_(R)=2.94 min (Method 11).

4-((1s,4r)-4-propylcyclohexyl)dihydro-2H-pyran-2,6(3H)-dione

To a stirring solution of dimethyl 3-((1s,4r)-4-propylcyclohexyl)pentanedioate (310 mg, 1.090 mmol) in THF (5 mL) and water (5 mL) was added lithium hydroxide (261 mg, 10.90 mmol). After 16 h, the reaction mixture was quenched into 1 M HCl (30 mL) and extracted with EA (3×30 mL). The combined organic layers were washed with brine (30 mL), dried over MgSO₄ and solvents evaporated. The residue was dissolved in acetic anhydride (10 mL) with stirring and heated under reflux. After 3 h, solvents were evaporated, chasing off with toluene (2×10 mL) to afford 272 mg (100%) of 4-((1s,4r)-4-propylcyclohexyl)dihydro-2H-pyran-2,6(3H)-dione. LCMS-ESI (m/z): calculated for C₁₄H₂₂O₃: 238.2 no response observed (Method 11). ¹H NMR (400 MHz, DMSO-d₆) 2.81-2.71 (m, 2H), 2.63-2.53 (m, 2H), 2.05-1.96 (m, 1H), 1.78-1.59 (m, 4H), 1.33-1.22 (m, 2H), 1.19-1.07 (m, 4H), 0.98-0.77 (m, 7H).

Compound 1512 was prepared from (S)-1-(3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(5-(tert-butyl)thiophene-2-carboxamido)propanoyl)azetidine-3-carboxylic acid (INT-71) and tert-butyl carbamate using General Procedures 11 and 8 sequentially and then using 4-((1s,4r)-4-propylcyclohexyl)dihydro-2H-pyran-2,6(3H)-dione and General Procedure 7.

(S)-methyl 1-(2-(((benzyloxy)carbonyl)amino)-3-(4-hydroxyphenyl)propanoyl)-azetidine-3-carboxylate

Prepared using General Procedure 7. To a stirring solution of methyl azetidine-3-carboxylate hydrochloride (14.42 g, 95 mmol), DIEA (33.2 mL, 190 mmol) and (S)-2-(((benzyloxy)carbonyl)amino)-3-(4-hydroxyphenyl)propanoic acid (10 g, 31.7 mmol) in DMF (200 mL) at 0° C. was added HATU (13.26 g, 34.9 mmol) portionwise. After 30 min, additional HATU (6.03 g, 15.86 mmol) was added. After a further 30 min, additional HATU (6.03 g, 15.86 mmol) was added. After a further 30 min, additional HATU (6.03 g, 15.86 mmol) was added. The mixture was poured into 1 M HCl (200 mL) and extracted with EA (2×300 mL). The combined organic extracts were washed with brine (2×200 mL), dried over MgSO₄ and solvents evaporated to afford 13.08 g (100%) of (S)-methyl 1-(2-(((benzyloxy)carbonyl)amino)-3-(4-hydroxyphenyl)propanoyl)azetidine-3-carboxylate. LCMS-ESI (m/z) calculated for C₂₂H₂₄N₂O₆: 412.2. found 413.2 [M+H]⁺, t_(R)=1.76 min (Method 11).

(S)-methyl 1-(2-(((benzyloxy)carbonyl)amino)-3-(4-(((trifluoromethyl)sulfonyl)-oxy)phenyl)propanoyl)azetidine-3-carboxylate

Prepared using General Procedure 9. To a stirring solution of 1,1,1-trifluoro-N-phenyl-N-((trifluoromethyl)sulfonyl)methanesulfonamide (11.33 g, 31.7 mmol) and (S)-methyl 1-(2-(((benzyloxy)carbonyl)amino)-3-(4-hydroxyphenyl)propanoyl)azetidine-3-carboxylate (13.08 g, 31.7 mmol) in DCM (300 mL) was added DIEA (5.54 ml, 31.7 mmol). After 16 h, additional 1,1,1-trifluoro-N-phenyl-N-((trifluoromethyl)sulfonyl)methanesulfonamide (2.266 g, 6.34 mmol) was added. After a further 5 h, the mixture was washed successively with 1 M HCl (300 mL), saturated aqueous NaHCO₃ (300 mL) and brine (300 mL). The organic phase was dried over MgSO₄ and solvent evaporated. Column chromatography (EA/DCM/iso-hexanes) gave 17.2 g (100%) of (S)-methyl 1-(2-(((benzyloxy)carbonyl)amino)-3-(4-(((trifluoromethyl)sulfonyl)oxy)phenyl)propanoyl)azetidine-3-carboxylate (11.2 g, 19.54 mmol, 61.6% yield) as a thick orange oil. LCMS-ESI (m/z) calculated for C₂₃H₂₃F₃N₂O₈S: 544.1. found 545.1 [M+H]⁺, t_(R)=2.40 min (Method 11).

(S)-methyl 1-(2-(((benzyloxy)carbonyl)amino)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propanoyl)azetidine-3-carboxylate

Prepared using General Procedure 27. To a stirring solution of (S)-methyl 1-(2-(((benzyloxy)carbonyl)amino)-3-(4-(((trifluoromethyl)sulfonyl)oxy)phenyl)propanoyl)-azetidine-3-carboxylate (18.1 g, 31.6 mmol) and 4,4,4′,4′,5,5,5′,5′-octamethyl-2,2′-bi(1,3,2-dioxaborolane) (8.02 g, 31.6 mmol) in dioxane (200 mL) was added potassium acetate (9.30 g, 95 mmol) and the mixture de-gassed. PdCl₂dppf (1.155 g, 1.579 mmol) was charged and the mixture heated to 100° C. After 4 h, the mixture was allowed to cool then treated with a mixture of water (300 mL) and brine (200 mL) and extracted with EA (400 mL then 2×300 mL). The combined organic layers were dried over MgSO₄ and solvents evaporated. Column chromatography (EA/DCM/iso-hexanes) gave 15 g (91%) of (S)-methyl 1-(2-(((benzyloxy)carbonyl)amino)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propanoyl)azetidine-3-carboxylate as a yellow oil. LCMS-ESI (m/z) calculated for CF₂₈H₃₅BN₂O₇: 544.1. found 545.1 [M+H]⁺, t_(R)=2.40 min (Method 11).

1-((S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-((1s,4r)-4-propylcyclohexyl)-piperidin-1-yl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylic acid

Prepared using General Procedure 10. To a stirring mixture of 2-chloro-5-(4-((1s,4r)-4-propylcyclohexyl)piperidin-1-yl)pyrimidine (INT-80) (310 mg, 0.963 mmol) and (S)-methyl 1-(2-(((benzyloxy)carbonyl)amino)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propanoyl)azetidine-3-carboxylate (503 mg, 0.963 mmol) in dioxane (3 mL) and toluene (3 mL) was added solid NaHCO₃ (324 mg, 3.85 mmol) and water (2 mL). The mixture was de-gassed then treated with PdCl₂(dppf) (49.3 mg, 0.067 mmol) and heated to 100° C. After 7 h, the reaction mixture was allowed to cool then diluted with EA (50 mL) and washed with brine (30 mL). The organics were dried MgSO₄ and solvents evaporated. Column chromatography (DCM/THF) gave 427 mg (66%) of 1-((S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-((1s,4r)-4-propylcyclohexyl)piperidin-1-yl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylic acid as a tan solid. LCMS-ESI (m/z) calculated for C₃₉H₄₉N₅O: 667.4. found 668.4 [M+H]⁺, t_(R)=3.21 min (Method 11).

methyl 1-((S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-((1s,4r)-4-propylcyclohexyl)piperidin-1-yl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate

To a stirring solution of 1-((S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-((1s,4r)-4-propylcyclohexyl)piperidin-1-yl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylic acid (427 mg, 0.639 mmol) in THF (3 mL) was added MeOH (0.6 mL) and water (0.6 mL). (Diazomethyl)trimethylsilane (448 μL of a 2 M solution in Et₂O, 0.895 mmol) was added dropwise. After 1 h, solvents were evaporated and the residue purified by column chromatography (DCM/THF) to afford 360 mg (83%) of 1-((S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-((1s,4r)-4-propylcyclohexyl)piperidin-1-yl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate as an orange solid. LCMS-ESI (m/z) calculated for C₄₀H₅₁N₅O₅: 681.4. found 682.4 [M+H]⁺, t_(R)=3.29 min (Method 11).

methyl 1-((S)-2-amino-3-(4-(5-(4-((1s,4r)-4-propylcyclohexyl)piperidin-1-yl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate (INT-82)

Prepared using General Procedure 18. To a stirring solution of methyl 1-((S)-2-(((benzyloxy)carbonyl)amino)-3-(4-(5-(4-((1s,4r)-4-propylcyclohexyl)piperidin-1-yl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate (350 mg, 0.513 mmol) in THF (4 mL) was added Pd/C (137 mg of Johnson and Matthey Type 39 paste) and the mixture hydrogenated under 5 bar. After 7 h, the mixture was filtered through Celite, washing with EA (3×30 mL). Solvents were evaporated to afford 234 mg (81%) of 1-((S)-2-amino-3-(4-(5-(4-((1s,4r)-4-propylcyclohexyl)piperidin-1-yl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate (INT-82) as a white solid. LCMS-ESI (m/z) calculated for C₃₂H₄₅N₅O₃: 547.4. found 548.4 [M+H]⁺, t_(R)=2.24 min (Method 11).

Compounds 1513-1538 were prepared from methyl 1-((S)-2-amino-3-(4-(5-(4-((1s,4r)-4-propylcyclohexyl)piperidin-1-yl)pyrimidin-2-yl)phenyl)propanoyl)azetidine-3-carboxylate (INT-82) using General Procedures 7 and 4 sequentially.

Compounds 1539-1550 were prepared from (S)-2-(5-(tert-butyl)thiophene-2-carboxamido)-3-(4-(5-(4-((1s,4r)-4-propylcyclohexyl)piperidin-1-yl)pyrimidin-2-yl)phenyl)propanoic acid (Compound 1439) using General Procedure 7.

Compound 1551 was prepared from (S)-2-(4-(tert-butyl)benzamido)-3-(4-(5-(4-(heptyloxy)phenyl)-1,3,4-thiadiazol-2-yl)phenyl)propanoic acid (Compound 83) using General Procedures 7 then 8.

tert-butyl 2(4-(heptyloxy)benzoyl)hydrazinecarboxylate

Prepared using General Procedure 3. To a stirring suspension of 4-(heptyloxy)benzoic acid (2.516 g, 10.65 mmol) in DCM (20 mL) was added DMF (1 drop) then oxalyl chloride (1.1 mL, 12.78 mmol). After 2 h, this solution was evaporated and the residue taken up in DCM (5 mL). This solution was then added dropwise to a stirring solution of tert-butyl hydrazinecarboxylate (1.548 g, 11.71 mmol) and DIEA (3.0 mL, 15.97 mmol) in DCM (20 mL) at 5° C. such that the internal temperature was maintained between 5° C. and 10° C. After a further 1 h at this temperature, the mixture was poured onto 1 M HCl (50 mL) and extracted with EA (3×30 mL). The combined organic extracts were washed successively with saturated aqueous NaHCO₃ (30 mL) and brine (20 mL), dried over MgSO₄ and evaporated to afford 3.66 g (98%) of tert-butyl 2-(4-(heptyloxy)benzoyl)hydrazinecarboxylate as an off-white solid. LCMS-ESI (m/z) calculated for C₁₉H₃₀N₂O₄: 350.2. found 373.1 [M+Na]⁺, t_(R)=2.65 min (Method 11).

tert-butyl 2-(4-(heptyloxy)phenylcarbonothioyl)hydrazinecarboxylate

To a stirring solution of tert-butyl 2-(4-(heptyloxy)benzoyl)hydrazinecarboxylate (2.62 g, 7.48 mmol) in THF (35 mL) was added 2,4-bis(4-methoxyphenyl)-1,3,2,4-dithiadiphosphetane 2,4-disulfide (3.18 g, 7.85 mmol) and the mixture heated under reflux. After 2 h, the mixture was allowed to cool then filtered, washing with THF (2×10 mL). The filtrate was evaporated onto silica and directly purified by column chromatography (Et₂O/DCM/iso-hexanes) to afford 1.91 g (69%) of tert-butyl 2-(4-(heptyloxy)phenylcarbonothioyl)hydrazinecarboxylate as a yellow oil. LCMS-ESI (m/z) calculated for C₁₉H₃₀N₂O₃S: 366.2. found 389.0 [M+Na]⁺, t_(R)=2.05 min (Method 11).

4-(heptyloxy)benzothiohydrazide hydrochloride

Prepared using General Procedure 8. To a stirring solution of tert-butyl 2-(4-(heptyloxy)phenylcarbonothioyl)hydrazinecarboxylate (1.8 g, 4.91 mmol) in DCM (10 mL) was added hydrogen chloride (4 M in dioxane) (24.6 mL of a 4 M solution in dioxane, 98 mmol). After 2 h, the mixture was treated with iso-hexanes (30 mL) and stirred for 1 h. The product was collected by filtration, washing with iso-hexanes (5 mL) to afford 1.06 g (71%) of 4-(heptyloxy)benzothiohydrazide hydrochloride as a yellow micro-crystalline solid. LCMS-ESI (m/z) calculated for C₁₄H₂₂N₂O₂S: 266.2. found 267.0 [M+H]⁺, t_(R)=2.50 min (Method 11).

2-(4-bromo-2-fluorophenyl)-5-(4-(heptyloxy)phenyl)-1,3,4-thiadiazole

To a stirred solution of 4-bromo-2-fluorobenzoic acid (240 mg, 1.096 mmol) in NMP (4 mL) was added DIEA (0.5 ml, 2.74 mmol) and HATU (438 mg, 1.151 mmol). After 10 min, 4-(heptyloxy)benzothiohydrazide hydrochloride (332 mg, 1.096 mmol) was added. After 1 h, hydrogen chloride (2.7 mL of a 4 M solution in dioxanes, 10.96 mmol) was added and the mixture heated to 60° C. After 1 h, the mixture was allowed to cool then treated with water (8 mL) and ACN (4 mL) and stirred for 1 h. The product was collected by filtration, washing successively with water (3×5 mL) then ACN (2×2 mL) to afford 390 mg (79%) of 2-(4-bromo-2-fluorophenyl)-5-(4-(heptyloxy)phenyl)-1,3,4-thiadiazole. LCMS-ESI (m/z) calculated for C₂₁H₂₂BrFN₂OS: 448.1. found 448.8 [M+H]⁺, t_(R)=3.29 min (Method 11).

(S)-methyl 2-((tert-butoxycarbonyl)amino)-3-(3-fluoro-4(5-(4-(heptyloxy)phenyl)-1,3,4-thiadiazol-2-yl)phenyl)propanoate

Prepared using General Procedure 31. To a stirring suspension of zinc (109 mg, 1.669 mmol) in DMF (2 mL) was added iodine (21 mg, 0.083 mmol). After the colour was observed to have been discharged, (R)-methyl 2-((tert-butoxycarbonyl)amino)-3-iodopropanoate (183 mg, 0.556 mmol) and further iodine (21 mg, 0.083 mmol) were charged. After a further 30 min, the mixture was treated with 2-(4-bromo-2-fluorophenyl)-5-(4-(heptyloxy)phenyl)-1,3,4-thiadiazole (250 mg, 0.556 mmol), diluted with DMF (1 mL) and de-gassed. The mixture was treated with dicyclohexyl(2′,6′-dimethoxy-[1,1?-biphenyl]-2-yl)phosphine (11 mg, 0.028 mmol) and Pd₂dba₃ (13 mg, 0.014 mmol) then heated to 50° C. After 3 h, the mixture was allowed to cool then directly purified by column chromatography (EA/iso-hexanes) to afford 238 mg (75%) of (S)-methyl 2-((tert-butoxycarbonyl)amino)-3-(3-fluoro-4-(5-(4-(heptyloxy)phenyl)-1,3,4-thiadiazol-2-yl)phenyl)propanoate as a waxy, yellow solid. LCMS-ESI (m/z) calculated for C₃₀H₃₈FN₃O₅S: 571.3. found 572.2 [M+H]⁺, t_(R)=3.00 min (Method 11).

(S)-methyl 2-(4-(tert-butyl)benzamido)-3-(3-fluoro-4-(5-(4-(heptyloxy)phenyl)-1,3,4-thiadiazol-2-yl)phenyl)propanoate

Prepared using General Procedures 8 and 7 sequentially. To a stirring solution of (S)-methyl 2-((tert-butoxycarbonyl)amino)-3-(3-fluoro-4-(5-(4-(heptyloxy)phenyl)-1,3,4-thiadiazol-2-yl)phenyl)propanoate (194 mg, 0.339 mmol) in DCM (2 mL) was added TFA (2 mL). After 1 h, the mixture was diluted with toluene (2 mL) and solvents evaporated. The residue was taken up in DCM (4 mL) and shaken with saturated aqueous NaHCO₃ (15 mL). The organics were split off through a hydrophobic frit directly into a stirring solution of 4-(tert-butyl)benzoic acid (66.5 mg, 0.373 mmol), DIEA (157 μl, 0.848 mmol) and HATU (135 mg, 0.356 mmol) in DMF (2 mL). After 16 h, the mixture was diluted with DCM (3 mL) and stirred with saturated aqueous NaHCO₃ (15 mL) for 15 min. The organics were split off through a hydrophobic fit and solvents evaporated. Column chromatography (EA/DCM/iso-hexanes) gave 186 mg (87%) of (S)-methyl 2-(4-(tert-butyl)benzamido)-3-(3-fluoro-4-(5-(4-(heptyloxy)phenyl)-1,3,4-thiadiazol-2-yl)phenyl)propanoate as an off-white flaky solid. LCMS-ESI (m/z) calculated for C₃₆H₄₂FN₃O₄S: 631.3. found 632.3 [M+H]⁺, t_(R)=3.15 min (Method 11).

(S)-2-(4-(tert-butyl)benzamido)-3-(3-fluoro-4-(5-(4-(heptyloxy)phenyl)-1,3,4-thiadiazol-2-yl)phenyl)propanoic acid (Compound 1552)

Prepared using General Procedure 4. To a stirring solution of (S)-methyl 2-(4-(tert-butyl)benzamido)-3-(3-fluoro-4-(5-(4-(heptyloxy)phenyl)-1,3,4-thiadiazol-2-yl)phenyl)propanoate (165 mg, 0.261 mmol) in THF (5 mL) and MeOH (2 mL) was added lithium hydroxide (522 μl of a 1 M aqueous solution, 0.522 mmol). After 18 h, the mixture was quenched with AcOH (150 μl, 2.61 mmol) then treated with water (15 mL) and stirred for 1 h. The product was collected by filtration, washing successively with water (2×5 mL) and ACN (2×2 mL) to afford 160 mg (99%) of (S)-2-(4-(tert-butyl)benzamido)-3-(3-fluoro-4-(5-(4-(heptyloxy)phenyl)-1,3,4-thiadiazol-2-yl)phenyl)propanoic acid (Compound 1552) as a white solid. LCMS-ESI (m/z) calculated for C₃₅H₄₀FN₃O₄S: 617.3. found 618.3 [M+H]⁺, t_(R)=10.98 min (Method 10). ¹H NMR (400 MHz, DMSO-d₆) δ 12.90 (s, 1H), 8.71 (d, J=8.3 Hz, 1H), 8.19 (t, J=7.9 Hz, 1H), 8.05-7.87 (m, 2H), 7.83-7.66 (m, 2H), 7.57-7.43 (m, 3H), 7.38 (dd, J=8.2, 1.6 Hz, 1H), 7.19-7.01 (m, 2H), 4.73 (ddd, J=10.7, 8.2, 4.5 Hz, 1H), 4.05 (t, J=6.5 Hz, 2H), 3.35-3.30 (m, 1H), 3.18 (dd, J=13.8, 10.8 Hz, 1H), 1.87-1.64 (m, 2H), 1.46-1.27 (m, 17H), 0.97-0.74 (m, 3H).

Compound 1553 was prepared from (R)-2-(4-(tert-butyl)benzamido)-3-(3-fluoro-4-(5-(4-(heptyloxy)phenyl)-1,3,4-thiadiazol-2-yl)phenyl)propanoic acid (Compound 1552) using General Procedures 7 then 8.

Selected compounds and their corresponding analytical data are shown in Table 1, where the LCMS data was collected using the method indicated.

Lengthy table referenced here US20160228450A1-20160811-T00001 Please refer to the end of the specification for access instructions.

Biological Assays Assay Procedures

GLP-1 PAM Shift cAMP Assay: Dose Response of Peptide Ligand in Presence of Fixed Concentration of Compound.

A GLP-1R expressing CRB-bla CHO-K1 cell line was purchased from Invitrogen. Cells were seeded into 384-well white flat bottom plates at 5000 cells/well/20 μL growth media (DMEM-High glucose, 10% dialyzed FBS, 0.1 mM NEAA, 25 mM Hepes, 100 U/mL penicillin/100 μg/mL streptomycin, 5 μg/mL Blasticidin, 600 μg/mL Hygromycin) and incubated for 18 h at 37° C. in 5% CO₂. Growth medium was replaced with 12 μL assay buffer (Hanks Balanced Salt solution, 10 mM Hepes, 0.1% BSA, pH 7.4). A 5× peptide dose response curve (12-point) was generated in assay buffer containing 1.5 mM IBMX, 12.5% DMSO, and 50 μM compound. Peptide ligand was GLP-1(9-36). The 5× peptide dose response plus compound mix was added (3 μL) and cells were incubated for 30 min at 37° C. Direct detection of cAMP was carried out using DiscoveRx HitHunter cAMP kit according to manufacturer's instructions and luminescence was read using a SpectraMax M5 plate reader. Luminescence was analyzed by non-linear regression to determine the EC₅₀ and Emax. A GLP-1(7-36) dose response was included to determine maximum efficacy.

EC₂₀GLP-1 (9-36) PAM cAMP Assay: Dose Response of Compound in the Presence of Fixed Concentration of GLP-1

GLP-1R CRE-bla CHO-K1 cells cultured in growth medium (DMEM-High glucose, 10% dialyzed FBS, 0.1 mM NEAA, 25 mM Hepes, 100 U/mL penicillin/100 μg/mL streptomycin, 5 μg/mL Blasticidin, 600 μg/mL Hygromycin) were trypsinized and plated in suspension into 384 well white flat bottom plates at 5000 cells/well in 12 μL assay buffer (Hanks Balanced Salt solution, 10 mM hepes, 0.1% BSA, pH 7.4). A 5× compound dose response curve (12-point) was generated in assay buffer containing 1.5 mM IBMX, 4% DMSO. GLP-1(9-36) was diluted to 4.2 μM in assay buffer containing 1.5 mM IMBX and 4% DMSO. The 5× compound dose response was added (3 μL), followed by 0.5 μL of GLP-1(9-36) and cells were incubated for 30 min at 37° C. Direct detection of cAMP was carried out using DiscoveRx HitHunter cAMP kit according to manufacturer's instructions and luminescence was read using a SpectraMax M5 plate reader. Luminescence was converted to total cAMP using a cAMP standard curve and data was analyzed by non-linear regression to determine the EC₅₀ and Emax.

Peptide Sequences

GLP-1(7-36): HAEGTFTSDVSSYLEGQAAKEFIAWLVKGR-NH₂ (SEQ ID NO: 2). GLP-1(9-36): EGTFTSDVSSYLEGQAAKEFIAWLVKGR-NH₂ (SEQ ID NO: 3). GLP-1(7-36) was purchased from GenScript. GLP-1(9-36) was purchased from Biopeptide Co., Inc.

Reported GLP-1 Activity

Activity data for selected GLP-1 modulators are displayed in Table 2. The EC₂₀GLP-1(9-36) PAM Activity range is denoted as follows: + denotes activity <0.8++ denotes activity between 0.8 and 2.5 μM, +++ denotes activity between 2.5 and 5 μM, and ++++ denotes activity 5 to 10 μM.

TABLE 2 COMPOUND EC₂₀ GLP-1(9-36) NUMBER PAM EC₅₀ 1 ++ 2 +++ 3 ++++ 4 ++++ 5 +++ 6 ++++ 7 ++++ 8 ++ 9 ++++ 10 +++ 11 ++ 13 ++ 14 +++ 15 +++ 16 ++++ 17 +++ 18 ++ 19 ++ 20 ++ 21 +++ 22 +++ 23 +++ 24 ++ 25 ++ 26 +++ 27 ++ 28 +++ 29 ++ 30 ++ 31 ++ 32 ++++ 33 +++ 34 +++ 35 +++ 36 +++ 37 +++ 38 ++ 39 ++ 40 +++ 41 +++ 42 +++ 43 +++ 44 +++ 45 ++ 46 ++ 47 +++ 48 ++++ 49 ++++ 50 +++ 51 +++ 52 ++ 53 +++ 54 +++ 55 +++ 56 +++ 57 +++ 58 +++ 59 +++ 60 +++ 61 +++ 62 +++ 63 ++ 64 ++ 65 +++ 66 +++ 67 ++ 68 +++ 69 ++++ 70 ++++ 71 +++ 72 ++++ 73 ++ 74 +++ 75 +++ 76 ++ 77 ++ 78 ++ 79 ++ 80 ++ 81 ++++ 82 ++ 83 ++ 84 ++ 85 ++ 86 ++ 87 ++ 88 ++++ 89 ++ 90 +++ 91 ++ 92 ++ 93 ++++ 94 ++ 95 ++ 96 +++ 97 ++ 98 ++ 99 ++ 100 ++ 101 ++ 102 ++ 104 ++ 105 ++++ 106 ++ 107 ++ 108 ++ 109 ++ 110 ++ 111 ++ 112 ++ 113 ++ 114 ++ 115 ++ 116 ++ 117 + 118 + 119 + 120 ++ 121 ++ 122 ++ 123 ++ 124 ++ 125 ++ 126 ++ 127 ++ 128 ++ 129 ++ 130 + 131 ++ 132 ++ 133 ++ 134 ++ 135 ++ 136 ++++ 137 ++ 138 ++ 139 ++ 140 +++ 141 ++ 142 + 143 + 144 ++ 145 ++ 146 +++ 147 +++ 148 ++ 149 ++ 150 ++ 151 ++ 152 ++ 153 ++ 154 + 155 ++ 156 ++ 157 ++ 158 + 159 ++ 160 ++ 161 ++ 162 ++ 163 ++ 164 ++ 165 ++ 166 ++ 167 ++ 168 ++ 169 ++++ 170 ++ 171 ++ 172 ++ 173 ++ 174 + 175 + 176 ++++ 177 ++ 178 ++ 179 ++++ 180 + 181 ++ 182 ++ 183 ++ 184 ++ 185 ++ 186 ++ 187 +++ 188 +++ 189 ++ 190 +++ 191 ++ 192 + 193 ++ 194 ++ 195 ++ 196 +++ 197 +++ 198 ++++ 199 ++ 200 +++ 201 +++ 202 ++++ 203 ++++ 204 +++ 205 ++ 206 +++ 207 +++ 208 +++ 209 ++ 210 +++ 211 ++++ 212 ++++ 213 +++ 214 +++ 215 +++ 216 +++ 217 ++++ 218 +++ 219 ++ 220 +++ 221 +++ 222 ++ 223 ++ 224 ++ 225 + 226 ++ 227 +++ 228 ++ 229 ++ 230 ++ 231 ++++ 232 ++ 233 +++ 234 ++++ 235 +++ 236 ++++ 237 ++ 238 ++ 239 ++ 240 +++ 241 ++ 242 ++ 243 ++ 244 +++ 245 ++ 246 ++ 247 ++ 248 +++ 249 ++++ 250 ++ 251 ++++ 252 ++++ 253 +++ 254 ++ 255 ++++ 256 ++++ 257 ++ 258 ++++ 259 ++ 260 + 261 +++ 262 +++ 263 ++ 264 ++ 265 ++++ 266 ++++ 267 ++ 268 ++ 269 ++ 270 +++ 271 ++ 272 ++ 273 ++ 274 ++ 275 ++ 276 ++ 277 + 278 +++ 279 ++++ 280 +++ 281 + 282 ++ 283 ++++ 284 ++ 285 ++ 286 +++ 287 ++++ 288 +++ 289 +++ 291 ++ 292 ++ 293 +++ 294 ++ 295 ++ 296 ++ 297 + 298 + 299 + 300 + 301 ++ 302 +++ 303 ++ 304 ++ 305 ++ 306 + 307 ++ 308 ++ 309 + 310 + 311 ++ 312 ++ 313 ++ 314 ++ 315 ++ 316 + 317 + 318 + 319 + 320 + 321 + 322 ++ 323 + 324 ++ 325 ++++ 326 + 327 + 328 + 329 ++ 330 ++ 331 ++ 332 ++ 333 + 334 ++ 335 ++ 336 + 337 ++ 338 ++ 339 ++ 340 ++ 341 + 342 ++ 343 ++ 344 + 345 + 346 ++ 347 + 348 ++ 349 + 350 + 351 + 352 + 353 ++ 354 + 355 ++ 356 ++ 357 ++ 358 ++ 359 ++ 360 ++ 361 ++ 362 +++ 363 ++ 364 ++ 365 +++ 366 +++ 367 ++ 368 + 369 ++ 370 ++ 371 + 372 + 373 ++ 374 ++ 375 + 376 ++ 377 + 378 + 379 + 380 ++ 381 ++ 382 ++ 383 +++ 384 ++++ 385 ++++ 386 ++ 387 ++++ 388 +++ 389 ++ 390 ++ 391 +++ 392 +++ 393 ++ 394 +++ 395 ++ 396 + 397 +++ 398 + 399 + 400 + 401 + 402 + 403 ++ 404 + 405 + 406 ++ 407 + 408 ++ 409 ++ 410 ++ 411 ++ 412 + 413 ++++ 414 + 415 + 416 + 417 + 418 + 419 + 420 + 421 ++ 422 + 423 ++ 424 + 425 +++ 426 ++ 427 ++ 428 ++ 429 +++ 430 ++++ 431 + 432 + 433 +++ 434 ++ 435 ++ 436 + 437 + 438 ++++ 439 +++ 440 + 441 ++ 442 ++ 443 ++ 444 + 445 + 446 ++ 447 ++ 448 + 449 ++ 450 + 451 + 452 +++ 453 ++ 454 ++ 455 + 456 ++ 457 +++ 458 ++ 459 ++ 460 ++++ 461 ++ 462 ++++ 463 ++++ 464 ++++ 465 ++ 466 ++ 467 + 468 + 469 ++ 470 + 471 ++++ 472 ++ 473 ++++ 474 ++ 475 ++ 476 +++ 477 + 478 + 479 + 480 ++ 481 ++ 482 + 483 ++ 484 ++ 485 ++++ 486 + 487 + 488 ++ 489 ++ 490 ++ 491 + 492 ++++ 493 + 494 + 495 + 496 + 497 + 498 ++ 499 + 500 ++ 501 + 502 + 503 ++ 504 +++ 505 ++ 506 ++ 507 ++ 508 + 509 ++ 510 +++ 511 ++ 512 + 513 + 514 + 515 + 516 + 517 + 518 ++ 519 ++ 520 ++ 521 + 522 ++ 523 + 524 + 525 + 526 + 527 + 528 + 529 + 530 + 531 ++ 532 + 533 + 534 ++ 535 ++++ 536 ++ 537 ++++ 538 ++++ 539 ++++ 540 + 541 ++ 542 + 543 + 544 + 545 + 546 ++ 547 ++ 548 + 549 + 550 ++ 551 + 552 ++ 553 ++ 554 + 555 +++ 556 + 557 + 558 + 559 ++++ 560 ++ 561 + 562 + 563 + 564 ++ 565 ++ 566 + 567 + 568 + 569 + 570 + 571 ++ 572 ++ 573 ++ 574 ++ 575 +++ 576 ++ 577 +++ 578 +++ 579 + 580 + 581 ++ 582 ++ 583 ++++ 584 ++ 585 ++ 586 + 587 + 588 ++ 589 ++ 590 + 591 + 592 ++ 593 + 594 + 595 + 596 ++ 597 + 598 + 599 + 600 + 601 ++ 602 + 603 ++ 604 ++ 605 + 606 ++ 607 ++ 608 ++ 609 + 610 + 611 + 612 + 613 ++ 614 ++ 615 ++++ 616 ++ 617 + 618 ++++ 619 ++ 620 ++++ 621 +++ 622 ++ 623 ++ 624 + 625 + 626 + 627 + 628 ++ 629 ++ 630 + 631 ++ 632 ++ 633 ++ 634 + 635 + 636 + 637 ++ 638 +++ 639 + 640 + 641 + 642 + 644 + 645 + 646 + 647 + 648 ++ 649 ++ 650 + 651 + 652 + 653 + 654 + 655 ++ 656 ++ 657 ++ 658 + 659 + 660 ++ 661 + 662 + 663 ++ 664 +++ 665 ++ 666 ++ 667 ++ 668 ++ 669 ++ 670 +++ 671 +++ 672 +++ 673 ++++ 674 ++++ 675 ++++ 676 +++ 677 +++ 678 ++ 679 ++ 680 ++++ 681 ++++ 682 +++ 683 ++ 684 ++++ 685 +++ 686 +++ 687 +++ 688 +++ 689 +++ 690 +++ 691 +++ 692 ++++ 693 ++++ 694 +++ 695 +++ 696 +++ 697 +++ 698 + 699 ++++ 700 ++++ 701 +++ 702 ++ 703 + 704 ++ 705 ++ 706 ++ 707 ++++ 708 ++ 709 ++ 710 ++++ 711 +++ 712 ++ 713 ++ 714 +++ 715 +++ 716 ++ 717 ++ 718 +++ 719 ++ 720 +++ 721 ++ 722 ++ 723 ++ 724 ++ 725 ++ 726 ++ 727 +++ 728 ++ 729 ++ 730 +++ 731 +++ 732 ++ 733 ++ 734 ++ 735 ++ 736 + 737 + 738 + 739 + 740 +++ 741 +++ 742 +++ 743 ++++ 744 ++++ 745 ++ 746 +++ 747 +++ 748 +++ 749 ++ 750 +++ 751 +++ 752 ++++ 753 +++ 754 ++++ 755 +++ 756 ++++ 757 ++ 758 +++ 759 ++ 760 ++ 761 +++ 762 ++++ 763 ++ 764 + 765 ++ 766 +++ 767 +++ 768 ++ 769 ++++ 770 + 771 ++ 772 + 773 ++ 774 ++ 775 + 776 + 777 ++ 778 + 779 ++ 780 +++ 781 +++ 782 ++ 783 ++ 784 ++++ 785 +++ 786 ++ 787 ++ 788 ++++ 789 +++ 790 ++ 791 ++ 792 ++ 793 ++ 794 ++ 795 + 796 + 797 ++ 798 ++ 799 ++ 800 ++++ 801 ++++ 802 +++ 803 ++ 804 ++ 806 ++ 807 ++++ 808 +++ 809 ++ 810 ++++ 811 ++ 812 ++ 813 ++ 814 ++ 815 + 816 ++ 817 ++ 818 ++ 819 +++ 820 +++ 821 ++ 822 +++ 823 ++ 824 + 825 + 826 +++ 827 ++ 828 + 829 ++++ 830 ++++ 832 +++ 833 ++++ 834 ++ 835 +++ 836 +++ 837 + 838 ++ 839 ++ 840 ++ 841 ++ 842 ++ 843 ++ 844 ++ 845 +++ 846 +++ 847 +++ 848 +++ 849 +++ 850 +++ 851 +++ 852 +++ 853 ++ 855 ++ 856 ++ 857 ++++ 858 ++ 859 +++ 860 ++ 861 +++ 862 ++ 863 ++ 864 ++ 865 ++ 866 +++ 867 ++ 868 ++ 869 +++ 870 ++ 871 +++ 872 ++ 873 + 874 ++ 875 ++ 876 ++ 877 ++ 878 + 879 +++ 880 + 881 ++ 882 ++ 883 ++++ 884 ++ 885 ++++ 886 ++ 887 + 888 ++ 889 ++ 890 ++ 891 ++ 892 + 893 +++ 894 ++++ 895 + 896 ++++ 897 ++++ 898 +++ 899 +++ 900 ++ 901 ++ 902 +++ 903 ++++ 904 +++ 905 ++++ 906 +++ 907 ++ 908 ++ 909 +++ 910 ++ 911 ++ 912 + 913 + 914 +++ 915 ++ 916 ++ 917 ++ 918 ++++ 919 ++++ 920 ++ 921 ++++ 922 ++++ 923 ++ 924 +++ 925 +++ 926 ++ 927 +++ 928 +++ 929 ++++ 930 ++++ 931 +++ 932 +++ 933 ++++ 934 ++++ 935 +++ 936 ++ 937 ++ 938 ++++ 939 +++ 940 ++ 941 +++ 942 +++ 943 ++ 944 + 945 + 946 +++ 947 ++ 948 +++ 949 ++ 950 ++ 951 ++ 952 +++ 953 ++ 954 ++ 955 ++++ 956 +++ 957 ++ 958 ++ 959 ++ 960 ++ 961 +++ 962 ++ 963 ++++ 964 +++ 965 ++++ 966 ++++ 967 +++ 968 ++++ 969 +++ 970 +++ 971 +++ 972 ++++ 973 ++++ 974 +++ 975 ++++ 976 +++ 977 ++++ 978 ++ 979 +++ 980 ++ 981 +++ 982 ++++ 983 ++++ 984 +++ 985 +++ 986 ++ 987 ++++ 988 ++++ 989 ++ 990 +++ 991 ++ 992 +++ 993 +++ 994 ++ 995 ++++ 996 ++ 997 ++++ 998 +++ 999 +++ 1000 ++++ 1001 +++ 1002 ++ 1003 ++++ 1004 ++ 1005 ++ 1006 ++ 1007 ++ 1008 ++++ 1009 +++ 1010 +++ 1011 +++ 1012 +++ 1013 ++++ 1014 ++++ 1015 ++ 1016 ++++ 1017 +++ 1018 ++++ 1019 +++ 1020 l l l l 1021 +++ 1022 +++ 1023 +++ 1024 ++ 1025 ++ 1026 +++ 1027 ++++ 1028 +++ 1029 +++ 1030 ++++ 1031 +++ 1032 ++ 1033 ++++ 1034 +++ 1035 ++ 1036 +++ 1037 ++ 1038 +++ 1039 ++ 1040 ++++ 1041 ++ 1042 ++++ 1043 +++ 1044 +++ 1045 +++ 1046 ++ 1047 +++ 1048 +++ 1049 ++ 1050 ++ 1051 ++++ 1052 +++ 1053 +++ 1054 +++ 1055 +++ 1056 + 1057 + 1058 + 1059 ++++ 1060 +++ 1061 +++ 1062 ++ 1063 + 1064 ++ 1065 + 1066 ++ 1067 ++ 1068 ++ 1069 ++ 1070 ++ 1071 +++ 1072 ++ 1073 ++ 1074 ++ 1075 ++ 1076 +++ 1077 ++ 1078 +++ 1079 +++ 1080 ++ 1081 ++ 1082 ++ 1083 ++ 1084 + 1085 ++ 1086 ++ 1087 + 1088 + 1089 ++ 1090 + 1091 ++ 1092 ++ 1093 + 1094 + 1095 +++ 1096 ++ 1097 ++ 1098 +++ 1099 ++ 1100 +++ 1101 ++ 1102 ++ 1103 ++ 1104 ++ 1105 +++ 1106 +++ 1107 ++ 1108 + 1109 ++ 1110 ++ 1111 ++ 1112 ++ 1113 ++ 1114 ++ 1115 ++ 1116 ++ 1117 ++ 1118 ++ 1119 ++ 1120 +++ 1121 ++ 1122 ++++ 1123 ++ 1124 + 1125 ++ 1126 ++ 1127 ++ 1128 + 1129 ++ 1130 ++ 1131 ++ 1132 ++ 1133 + 1134 ++ 1135 ++ 1136 ++ 1137 + 1138 + 1139 + 1140 + 1141 + 1142 + 1143 + 1144 ++ 1145 + 1146 + 1147 + 1148 + 1149 ++++ 1150 + 1151 + 1152 + 1153 + 1154 + 1155 + 1156 + 1157 + 1158 + 1159 + 1160 + 1161 ++ 1162 +++ 1163 + 1164 + 1165 + 1166 + 1167 + 1168 + 1169 + 1170 + 1171 + 1172 ++ 1173 + 1174 + 1175 + 1176 + 1177 + 1178 + 1179 + 1180 +++ 1181 ++ 1182 + 1183 + 1184 + 1185 + 1186 + 1187 + 1188 + 1189 + 1190 + 1191 + 1192 + 1193 + 1194 + 1195 + 1196 + 1197 ++ 1198 + 1199 + 1200 + 1201 + 1202 ++++ 1203 + 1204 + 1205 + 1206 ++ 1207 + 1208 + 1209 + 1210 + 1211 + 1212 + 1213 + 1214 +++ 1215 + 1216 + 1217 + 1218 + 1219 + 1220 + 1221 + 1222 + 1223 + 1224 + 1225 + 1226 + 1227 ++ 1228 ++ 1229 +++ 1230 ++ 1231 ++ 1232 ++ 1233 ++ 1234 +++ 1235 +++ 1236 ++ 1237 +++ 1238 ++ 1239 ++ 1240 ++ 1241 ++ 1242 ++ 1243 ++ 1244 +++ 1245 +++ 1246 + 1247 ++ 1248 ++++ 1249 +++ 1250 ++ 1251 ++++ 1252 ++ 1253 + 1254 ++ 1255 +++ 1256 ++++ 1257 +++ 1258 ++ 1259 ++++ 1260 ++ 1261 ++ 1262 ++ 1263 +++ 1264 ++ 1265 + 1266 +++ 1267 ++++ 1268 + 1269 ++++ 1270 ++ 1271 ++ 1272 ++++ 1273 ++++ 1274 +++ 1275 ++ 1276 ++ 1277 ++ 1278 + 1279 +++ 1280 + 1281 +++ 1282 + 1283 + 1284 ++ 1285 + 1286 + 1287 ++ 1288 ++ 1289 + 1290 +++ 1291 ++ 1292 + 1293 + 1294 ++ 1295 ++ 1296 +++ 1297 +++ 1298 + 1299 ++ 1300 ++ 1301 ++++ 1302 ++++ 1303 ++++ 1304 ++ 1305 + 1306 ++ 1307 ++ 1308 ++ 1309 ++ 1310 +++ 1311 +++ 1312 ++ 1313 + 1314 + 1315 + 1316 + 1317 + 1318 + 1319 ++++ 1320 + 1321 ++ 1322 + 1323 + 1324 + 1325 + 1326 + 1327 + 1328 ++ 1329 + 1330 + 1331 + 1332 + 1333 +++ 1334 + 1335 +++ 1336 +++ 1337 + 1338 +++ 1339 + 1340 + 1341 + 1342 ++ 1343 + 1344 ++ 1345 ++ 1346 + 1347 + 1348 +++ 1349 ++++ 1350 +++ 1351 +++ 1352 ++ 1353 ++++ 1354 +++ 1355 + 1356 + 1357 +++ 1358 +++ 1359 ++ 1360 +++ 1361 ++ 1362 + 1363 + 1364 + 1365 + 1366 + 1367 + 1368 + 1369 ++ 1370 ++ 1371 ++ 1372 ++ 1373 + 1374 ++ 1375 ++ 1376 ++ 1377 ++ 1378 + 1379 + 1380 ++ 1381 ++++ 1382 ++ 1383 ++ 1384 ++ 1385 ++++ 1386 ++ 1387 + 1388 ++ 1389 + 1390 ++++ 1391 + 1392 ++ 1393 ++ 1394 + 1395 + 1396 + 1397 + 1398 + 1399 + 1400 + 1401 + 1402 + 1403 + 1404 + 1405 + 1406 + 1407 + 1408 + 1409 + 1410 + 1411 ++ 1412 + 1413 + 1414 + 1415 ++++ 1416 + 1417 ++ 1418 ++++ 1419 + 1420 +++ 1421 + 1422 ++ 1423 ++ 1424 + 1425 ++ 1426 ++ 1427 + 1428 + 1429 + 1430 + 1431 + 1432 + 1433 + 1434 ++++ 1435 ++ 1436 ++ 1437 + 1438 + 1439 + 1440 ++++ 1441 ++ 1442 + 1443 + 1444 + 1445 + 1446 + 1447 + 1448 ++++ 1449 + 1450 + 1451 ++ 1452 + 1453 + 1454 + 1455 + 1456 + 1457 + 1458 + 1459 + 1460 + 1461 + 1462 ++ 1463 + 1464 + 1465 + 1466 + 1467 + 1468 + 1469 + 1470 + 1471 + 1472 + 1473 + 1474 + 1475 + 1476 + 1477 + 1478 ++ 1479 ++ 1480 ++ 1481 + 1482 ++ 1483 ++ 1484 ++ 1485 + 1486 ++ 1487 ++ 1488 ++ 1489 + 1490 ++ 1491 ++ 1492 ++ 1493 + 1494 ++ 1495 ++ 1496 ++ 1497 +++ 1498 ++ 1499 +++ 1500 ++++ 1501 ++++ 1502 +++ 1503 ++ 1504 ++ 1505 ++ 1506 ++++ 1507 ++ 1508 + 1509 ++++ 1510 +++ 1511 + 1512 + 1513 + 1514 + 1515 + 1516 + 1517 + 1518 + 1519 + 1520 + 1521 + 1522 + 1523 ++ 1524 + 1525 + 1526 + 1527 ++ 1528 ++ 1529 + 1530 ++ 1531 + 1532 + 1533 + 1534 + 1535 ++ 1536 + 1537 + 1538 ++ 1539 +++ 1540 + 1541 ++ 1542 + 1543 + 1544 + 1545 + 1546 + 1547 + 1548 + 1549 + 1550 + 1551 +++ 1552 ++ 1553 ++

In Vivo Assays In Vivo Procedures The Oral Glucose Tolerance Test in C57B1/6 Mice.

Fasted C57BL/6 female mice are 8-10 weeks of age. Sitagliptin, compound, or vehicle is dosed at least 1 hr prior to the oGTT. Mice receive a bolus of glucose (3 g/kg) by oral gavage (time 0). Blood samples are collected at frequent time intervals from the tail tip for glucose measurement (BD glucometer; Becton-Dickinson, Lincoln Park, N.J.).

The Oral Glucose Tolerance Test in Ob/Ob Mice

Fasted ob/ob female mice are 7-10 weeks of age. Sitagliptin, compound, or vehicle is dosed at least 1 hr prior to the oGTT. Mice receive a bolus of glucose (0.2 g/kg) by oral gavage (time 0). Blood samples are collected at frequent time intervals from the tail tip for glucose measurement (BD glucometer; Becton-Dickinson, Lincoln Park, N.J.).

The Oral Glucose Tolerance Test in fa/fa Rats.

The use of the compounds of this invention to lower glucose can be evaluated in rats using the protocol described by Pederson et. al. (Diabetes, Vol. 47, August 1998, 1253-1258). After an overnight fast, lean or obese animals are administered oral glucose by syringe and feeding tube (1 g/kg) as a 40% solution (wt/vol). Compound is dissolved and administered along with the glucose. In control experiments, vehicle is administered along with oral glucose. Blood samples are collected from the tail veins of conscious unrestrained rats into heparinized capillary tubes at 0 and 5, 10, 20, 30, and 60 min after glucose administration. Blood samples are centrifuged at 4° C., and plasma is stored at −20° C. until analysis for glucose and insulin measurement. Glucose levels are measured using the glucose oxidase procedure (Beckman glucose analyzer; Fullerton, Calif.).

The various embodiments described above can be combined to provide further embodiments. All of the U.S. patents, U.S. patent application publications, U.S. patent applications, foreign patents, foreign patent applications and non-patent publications referred to in this specification and/or listed in the Application Data Sheet, are incorporated herein by reference, in their entirety. Aspects of the embodiments can be modified, if necessary to employ concepts of the various patents, applications and publications to provide yet further embodiments. These and other changes can be made to the embodiments in light of the above-detailed description. In general, in the following claims, the terms used should not be construed to limit the claims to the specific embodiments disclosed in the specification and the claims, but should be construed to include all possible embodiments along with the full scope of equivalents to which such claims are entitled. Accordingly, the claims are not limited by the disclosure.

LENGTHY TABLES The patent application contains a lengthy table section. A copy of the table is available in electronic form from the USPTO web site (http://seqdata.uspto.gov/?pageRequest=docDetail&DocID=US20160228450A1). An electronic copy of the table will also be available from the USPTO upon request and payment of the fee set forth in 37 CFR 1.19(b)(3). 

1. A compound having the structure of Formula I-R or I-S or a pharmaceutically acceptable isomer, enantiomer, racemate, salt, ester, prodrug, hydrate or solvate thereof:

wherein A is a 5-, 6- or 7-membered heterocyclyl having one, two or three heteroatoms where each such heteroatom is independently selected from O, N, and S, and where any ring atom of such heterocyclyl may be optionally substituted with one or more of R₄; B is aryl, aralkyl, heterocyclyl, or heterocyclylalkyl; C is aryl, aralkyl, heterocyclyl or heterocyclylalkyl, and when C is aryl A and C may be taken together to form a fused bicyclic ring system between the 5-, 6- or 7-membered heterocyclyl of A and the aryl of C; Y₁ and Y₂ are both null, or one of Y₁ or Y₂ is —NH— or —O— and the other Y₁ or Y₂ is null; Z is —C(O)— or —S(O)₂—; each R₁ is independently H or C₁₋₄ alkyl; R₂ is —OH, —O—R₈, —N(R₁)—SO₂—R₇, —NR₄₁R₄₂, —N(R₁)—(CR_(a)R_(b))_(m)—COOR₈, —N(R₁)—(CR_(a)R_(b))_(m)—CO—N(R₁)(R₄₀), —N(R₁)—(CR_(a)R_(b))_(m)—N(R₁)C(O)O(R₈), —N(R₁)—(CR_(a)R_(b))_(m)—N(R₁)(R₄₀), —N(R₁)—(CR_(a)R_(b))_(m)—CO—N(R₁)-heterocyclyl, or —N(R₁)—(CR_(a)R_(b))_(m) heterocyclyl, which heterocyclyl may be optionally (singly or multiply) substituted with R₇; each R₃ and R₄ is independently H, halo, alkyl, alkyl substituted (singly or multiply) with R₃₁, alkoxy, haloalkyl, perhaloalkyl, haloalkoxy, perhaloalkoxy, aryl, heterocyclyl, —OH, —OR₇, —CN, —NO₂, —NR₁R₇, —C(O)R₇, —C(O)NR₁R₇, —NR₁C(O)R₇, —SR₇, —S(O)R₇, —S(O)₂R₇, —OS(O)₂R₇, —S(O)₂NR₁R₇, —NR₁S(O)₂R₇, —(CR_(a)R_(b))_(m)NR₁R₇, —(CR_(a)R_(b))_(m)O(CR_(a)R_(b))_(m)R₇, —(CR_(a)R_(b))_(m)NR₁(CR_(a)R_(b))_(m)R₇ or —(CR_(a)R_(b))_(m)NR₁(CR_(a)R_(b))_(m)COOR₈; or any two R₃ or R₄ groups on the same carbon atom taken together form oxo; each R₃₁ is independently H, halo, hydroxyl, —NR₄₁R₄₂, or alkoxy; each R₄₀ is independently H, R₇, alkyl which may be optionally (singly or multiply) substituted with R₇, or R₄₀ and R₁ taken together with the N atom to which they are attached form a 3- to 7-membered heterocyclyl which may be optionally (singly or multiply) substituted with R₇; each R₄₁ and R₄₂ is independently R₄₀, —(CHR₄₀)_(n)—C(O)O—R₄₀, —(CHR₄₀)_(n)—C(O)—R₄₀, —(CH₂)_(n)—N(R₁)(R₇), aryl or heteroaryl any of which aryl or heteroaryl may be optionally (singly or multiply) substituted with R₇; or any two R₄₁ and R₄₂ taken together with the N atom to which they are attached form a 3- to 7-membered heterocyclyl which may be optionally (singly or multiply) substituted with R₇; W₁ is null or L₁-(CR_(a)R_(b))_(m)-L₁-R₆; each L₁ is independently, from the proximal to distal end of the structure of Formula I-R or I-S, null, —C(O)O—, —S(O₂)—, —S(O)—, —S—, —N(R₁)—C(O)—N(R₁)—, —(R₁)—C(O)—O—, —C(O)— or —S(O₂)—NR₁—; each R_(a) and R_(b) is independently H, halo, alkyl, alkoxy, aryl, aralkyl, heterocyclyl, heterocyclylalkyl (any of which alkyl, alkoxy, aryl, aralkyl, heterocyclyl or heterocyclylalkyl may be optionally (singly or multiply) substituted with R₇), —(CHR₄₀)_(m)C(O)OR₄₀, —(CHR₄₀)_(m)OR₄₀, —(CHR₄₀)_(m)SR₄₀, —(CHR₄₀)_(m)NR₄₁R₄₂, —(CHR₄₀)_(m)C(O)NR₄₁R₄₂, —(CHR₄₀)_(m)C(O)N(R₁)(CHR₄₀)_(m)—NR₄₁R₄₂, —(CHR₄₀)_(m)C(O)—N(R₁)(CHR₄₀)_(m)C(O)NR₄₁R₄₂, —(CHR₄₀)_(m)C(O)N(R₁)—(CHR₄₀)_(m)C(O)OR₄₀, or —(CHR₄₀)_(m)—S—S—R₄₀; or any two R_(a) and R_(b) taken together with the carbon atom(s) to which they are attached form a cycloalkyl or heterocyclyl optionally substituted (singly or multiply) with R₇; or R₁ and any one of R_(a) or R_(b) taken together with the atom(s) to which they are attached form heterocyclyl optionally substituted (singly or multiply) with R₇; R₅ is R₇, —(CR_(a)R_(b))_(m)-L₂-(CR_(a)R_(b))_(m)—R₇, or -(-L₃-(CR_(a)R_(b))_(r)—)_(s)-L₃-R₇, wherein the carbon atoms of any two adjacent —(CR_(a)R_(b))_(m) or —(CR_(a)R_(b))_(r) groups may be taken together to form a double bond (—(C(R_(a))═(C(R_(a))−) or triple bond (—C≡C—); R₆ is H, alkyl, aryl, heteroaryl, heterocyclyl, heterocycloalkyl, any of which may be optionally substituted (singly or multiply) with R₇ or —(CR_(a)R_(b))_(m)-L₂-(CR_(a)R_(b))_(m)—R₇; each R₇ is independently R₁₀; a ring moiety selected from cycloalkyl, aryl, aralkyl, heterocyclyl or heterocyclylalkyl, where such ring moiety is optionally singly or multiply substituted with R₁₀; or when a carbon atom bears two R₇ groups such two R₇ groups are taken together to form oxo or thioxo, or are taken together to form a ring moiety selected from cycloalkyl, aryl, heterocyclyl or heterocyclyl, wherein such ring moiety is optionally singly or multiply substituted with R₁₀; each R₁₀ is independently H, halo, alkyl, haloalkyl, haloalkoxy, perhaloalkoxy, perhaloalkyl, —(CR_(a)R_(b))_(m)OH, —(CR_(a)R_(b))_(m)OR₈, —(CR_(a)R_(b))_(m)CN, —(CR_(a)R_(b))_(m)NH(C═NH)NH₂, —(CR_(a)R_(b))_(m)NR₁R₈, —(CR_(a)R_(b))_(m)O(CR_(a)R_(b))_(m)R₈, —(CR_(a)R_(b))_(m)NR₁(CR_(a)R_(b))_(m)R₈, —(CR_(a)R_(b))_(m)C(O)R₈, —(CR_(a)R_(b))_(m)C(O)OR₈, —(CR_(a)R_(b))_(m)C(O)NR₁R₈, —(CR_(a)R_(b))_(m)NR₁(CR_(a)R_(b))_(m)C(O)OR₈, —(CR_(a)R_(b))_(m)NR₁C(O)R₈, —(CR_(a)R_(b))_(m)C(O)NR₁S(O)₂R₈, —(CR_(a)R_(b))_(m)SR₈, —(CR_(a)R_(b))_(m)S(O)R₈, —(CR_(a)R_(b))_(m)S(O)₂R₈, —(CR_(a)R_(b))_(m)S(O)₂NR₁R₈ or —(CR_(a)R_(b))_(m)NR₁S(O)₂R₈; each R₈ is independently H, alkyl, haloalkyl, aryl, —(CR_(a)R_(b))_(m)-L₂-(CR_(a)R_(b))_(m)—R₁ or -(-L₃-(CR_(a)R_(b))_(r)—)_(s)-L₃-R₁; L₂ is independently, from the proximal to distal end of the structure of Formula I-R or I-S, null, —O—, —OC(O)—, —NR₁—, —C(O)NR₁—, —N(R₁)—C(O)—, —S(O₂)—, —S(O)—, —S—, —C(O)— or —S(O₂)—N(R₁)—; each L₃ is independently null, —O—, or —N(R₁)— each m is independently 0, 1, 2, 3, 4, 5 or 6; each n is independently 0 or 1 or 2; p is 0, 1, 2 or 3; q is 0, 1, 2 or 3; each r is independently 2, 3, or 4; and each s is independently 1, 2, 3, or
 4. 2. The compound of claim 1 having the following structure:

wherein C(R₅)_(q) is selected from one of the following:


3. The compound of claim 2 having the following structure:


4. The compound of claim 1 having the following structure:

wherein C(R₅)_(q) is selected from one of the following:

5-14. (canceled)
 15. The compound of claim 4 having the following structure:


16. The compound of claim 4 having the following structure:


17. The compound of claim 4 having the following structure:

18-31. (canceled)
 32. The compound of claim 4 having the following structure:


33. The compound of claim 4 having the following structure:


34. The compound of claim 32 having the following structure:


35. The compound of claim 33 having the following structure:

36-41. (canceled)
 42. The compound of claim 1 having the following structure:

43-50. (canceled)
 51. The compound of claim 1 having the following structure:

52-59. (canceled)
 60. The compound of claim 1 having the structure:


61. The compound of claim 60 having the following structure:


62. The compound of claim 60 having the following structure:


63. The compound of claim 62 having the following structure:


64. The compound of claim 1 having the structure


65. The compound of claim 1 having the structure:


66. The compound of claim 1 having the structure:


67. The compound of claim 1 having the structure:


68. The compound of claim 1 wherein C(R₅)_(q) is:


69. The compound of claim 1 wherein C(R₅)_(q) is:


70. The compound of claim 1 wherein C(R₅)_(q) is:


71. The compound of claim 1 wherein C(R₅)_(q) is:


72. The compound of claim 1 wherein C(R₅)_(q) is:


73. The compound of claim 1 wherein C(R₅)_(q) is:


74. The compound of claim 1 wherein C(R₅)_(q) is:


75. The compound of claim 1 wherein C(R₅)_(q) is:


76. The compound of claim 1 wherein C(R₅)_(q) is:


77. The compound of claim 1 wherein C(R₅)_(q) is:


78. The compound of claim 1 wherein C(R₅)_(q) is:


79. The compound of claim 1 wherein C(R₅)_(q) is:


80. The compound of claim 1 wherein C(R₅)_(q) is:


81. The compound of claim 1 wherein C(R₅)_(q) is:


82. The compound of claim 1 wherein C(R₅)_(q) is:


83. The compound of claim 1, wherein the compound has the structure of any one of compounds 1 through 1553 of Table 1 or a pharmaceutically acceptable isomer, enantiomer, racemate, salt, ester, prodrug, hydrate or solvate thereof.
 84. A pharmaceutical composition comprising a compound of claim 1 together with at least one pharmaceutically acceptable carrier, diluent or excipient.
 85. A pharmaceutical combination comprising the compound of claim 1 and a second medicament. 86-92. (canceled)
 93. A method of activation, potentiation, modulation or agonism of a glucagon-like peptide 1 receptor comprising contacting the receptor with an effective amount of a compound of claim
 1. 94. A method of potentiating a glucagon-like peptide 1 receptor comprising contacting the receptor with a compound of claim 1 in the presense of GLP-1(7-36), GLP-1(9-36) and/or oxyntomodulin.
 95. A method of treatment of a malcondition in a patient for which activation, potentiation, modulation or agonism of a glucagon-like peptide 1 receptor is medically indicated, comprising administering an effective amount of the compound of claim 1 to the patient at a frequency and for a duration of time sufficient to provide a beneficial effect to the patient.
 96. The method of claim 95 wherein the malcondition is type I diabetes, type II diabetes, gestational diabetes, obesity, excessive appetite, insufficient satiety, metabolic disorder, non-alcoholic fatty liver disease or non-alcoholic steatohepatitis.
 97. The method of claim 95 wherein the malcondition is type II diabetes.
 98. The method of claim 95 wherein the malcondition is non-alcoholic fatty liver disease or non-alcoholic steatohepatitis. 